<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nefr</journal-id><journal-title-group><journal-title xml:lang="ru">Нефрология</journal-title><trans-title-group xml:lang="en"><trans-title>Nephrology (Saint-Petersburg)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-6274</issn><issn pub-type="epub">2541-9439</issn><publisher><publisher-name>Pavlov First Saint-Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.36485/1561-6274-2020-24-4-102-109</article-id><article-id custom-type="elpub" pub-id-type="custom">nefr-1865</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ПРОГРАММА НЕПРЕРЫВНОГО ПОСЛЕДИПЛОМНОГО ОБРАЗОВАНИЯ ПО НЕФРОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PROGRAM ON CONTINUOUS POSTGRADUATE EDUCATION ON NEPHROLOGY</subject></subj-group></article-categories><title-group><article-title>Проблемы количественной оценки экскреторной функции почек на основе креатинина</article-title><trans-title-group xml:lang="en"><trans-title>Problems of quantitative estimation of excretory kidney function based on creatinin</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1520-0860</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нагибович</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nagibovich</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доц. Нагибович Олег Александрович, д-р мед. наук</p><p>194044, Санкт-Петербург, ул. Академика Лебедева, д. 6, лит. Ж</p><p>Тел.: +7(812)713-05-19 </p></bio><bio xml:lang="en"><p>Associate prof. Oleg A. Nagibovich MD, PhD, DMedSci, Head</p><p>194044, St. Petersburg, Akademika Lebedeva st., 6, lit. G</p><p>Phone: +7(812)713-05-19 </p></bio><email xlink:type="simple">olegnagibovich@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4862-6208</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шипилова</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shipilova</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шипилова Дарья Алексеевна, адъюнкт</p><p>194044, Санкт-Петербург, ул. Академика Лебедева, д. 6, лит. Ж</p><p>Тел.: +7(812)713-05-19 </p></bio><bio xml:lang="en"><p>Daria A. Shipilova MD, adjunct</p><p>194044, St. Petersburg, Akademika Lebedeva st., 6, lit. G</p><p>Phone: +7(812)713-05-19 </p></bio><email xlink:type="simple">dashuta_shipilova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щукина</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchukina</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щукина Нэлла Алексеевна, научный сотрудник</p><p>194044, Санкт-Петербург, ул. Академика Лебедева, д. 6, лит. Ж</p><p>Тел.: +7(812)713-05-19 </p></bio><bio xml:lang="en"><p>Nella A. Shchukina, MD, researcher</p><p>194044, St. Petersburg, Akademika Lebedeva st., 6, lit. G</p><p>Phone: +7(812)713-05-19 </p></bio><email xlink:type="simple">tshukina.nella@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Трандина</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Trandina</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Трандина Александра Евгеньевна, врач клинической лабораторной диагностики</p><p>194044, Санкт-Петербург, ул. Академика Лебедева, д. 6, лит. Ж</p><p>Тел.: +7(812)713-05-19 </p></bio><bio xml:lang="en"><p>Aleksandra E. Trandina MD, researcher</p><p>194044, St. Petersburg, Akademika Lebedeva st., 6, lit. G</p><p>Phone: +7(812)713-05-19 </p></bio><email xlink:type="simple">sasha-trandina@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский центр, Военно-медицинская академия им. С.М. Кирова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research and development center, Military Medical Academy named after S.M. Kirov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>26</day><month>06</month><year>2020</year></pub-date><volume>24</volume><issue>4</issue><fpage>102</fpage><lpage>109</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нагибович О.А., Шипилова Д.А., Щукина Н.А., Трандина А.Е., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Нагибович О.А., Шипилова Д.А., Щукина Н.А., Трандина А.Е.</copyright-holder><copyright-holder xml:lang="en">Nagibovich O.A., Shipilova D.A., Shchukina N.A., Trandina A.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.nephrolog.ru/jour/article/view/1865">https://journal.nephrolog.ru/jour/article/view/1865</self-uri><abstract><p>В настоящем обзоре представлены возможности применения креатинина сыворотки, как эндогенного индикатора функционального состояния почек. Проанализированы результаты научных исследований, которые показывают информативность применения этого показателя для оценки скорости клубочковой фильтрации (СКФ). Рассмотрены особенности лабораторных методов определения креатинина сыворотки. Особое внимание уделено сведениям о погрешностях и вариативности измерений стандартизованных методов, полученных в лабораториях разных стран. Помимо физиологических причин, которые делают креатинин сыворотки несовершенным маркером СКФ, существуют аналитические погрешности измерения, которые, в свою очередь, также могут искажать истинные результаты. Поскольку связь между креатинином сыворотки и СКФ является гиперболической, аналитические погрешности будут влиять не только на точность креатинина сыворотки, но и на точность расчетных уравнений на его основе. Внедрение стандартизации рутинных методов измерения сывороточного креатинина по эталонному образцу улучшило оценку СКФ за счет уменьшения смещения результатов измерения креатинина от его истинного значения. Для повышения точности и надежности стандартизованных методов необходимо продолжить исследования в данном направлении. В реальной клинической практике должны учитываться все ограничения и допущения конкретного метода измерения креатинина, чтобы избежать неправильной интерпретации результатов при оценке функциональной способности и стадирования хронической болезни почек. При проспективном наблюдении за конкретным пациентом целесообразно использовать одну и ту же расчетную формулу СКФ и один и тот же метод измерения креатинина сыворотки крови.</p></abstract><trans-abstract xml:lang="en"><p>This review presents the possibility of using serum creatinine as an endogenous indicator of the functional state of the kidneys. The results of scientific research are analyzed, which shows the information content of the use of this indicator for assessing glomerular filtration rate (GFR). The features of laboratory methods for determining serum creatinine are considered. Particular attention is paid to information about the errors and variability of measurements of standardized methods obtained in laboratories of different countries. In addition to the physiological reasons that make serum creatinine an imperfect marker for GFR, there are analytical measurement errors, which, in turn, can also distort true results. Since the relationship between serum creatinine and GFR is hyperbolic, analytical errors will affect not only the accuracy of the calculation equations based on it. The introduction of standardization of routine methods for measuring serum creatinine from a reference sample improved the assessment of GFR by reducing the bias of the results of measuring creatinine from its true value. To increase the accuracy and reliability of standardized methods, it is necessary to continue research in this direction. In real clinical practice, all the limitations and assumptions of a specific method of measuring creatinine should be taken into account in order to avoid incorrect interpretation of the results when assessing the functional ability and staging of chronic kidney disease. For prospective observation of a specific patient, the same GFR calculation formula and the same method for measuring serum creatinine should be used.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>креатинин сыворотки крови</kwd><kwd>скорость клубочковой фильтрации</kwd><kwd>хроническая болезнь почек</kwd><kwd>метод Яффе</kwd><kwd>ферментативный анализ</kwd><kwd>стандартизация</kwd><kwd>аналитическая вариация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>serum creatinine</kwd><kwd>glomerular filtration rate</kwd><kwd>chronic kidney disease</kwd><kwd>Jaffe method</kwd><kwd>enzymatic analysis</kwd><kwd>standardization</kwd><kwd>analytical variation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Клинические практические рекомендации KDIGO 2012 по диагностике и лечению хронической болезни почек. Нефрология и диализ 2017;19(1):22–206. doi: 10.28996/1680-4422-2017-1-22-206 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease KDIGO 2012. Nephrology and dialysis 2017;19(1):22–206 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Клинические практические рекомендации KDIGO 2012 по диагностике и лечению хронической болезни почек. Нефрология и диализ 2017;19(1):22–206. doi: 10.28996/1680-4422-2017-1-22-206 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease KDIGO 2012. Nephrology and dialysis 2017;19(1):22–206 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Дедов ИИ, Шестакова МВ, Майоров АЮ и др. Алгоритмы специализированной медицинской помощи больным сахарным диабетом. СД 2019;22(S1):68–79. doi: 10.14341/DM20171S8 Dedov II, Shestakova MV, Mayorov AY et al. Standards of specialized diabetes care. DM 2019; 22(S1):68–79 (In Russ.).</mixed-citation><mixed-citation xml:lang="en">Дедов ИИ, Шестакова МВ, Майоров АЮ и др. Алгоритмы специализированной медицинской помощи больным сахарным диабетом. СД 2019;22(S1):68–79. doi: 10.14341/DM20171S8 Dedov II, Shestakova MV, Mayorov AY et al. Standards of specialized diabetes care. DM 2019; 22(S1):68–79 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Шилов ЕМ, Смирнов АВ, Козловская НЛ. Нефрология. Клинические рекомендации. ГЭОТАР-Медиа, М., 2016; 561 Shilov EM, Smirnov AV, Kozlovskaya NL. Nephrology. Clinical recommendations. GEOTAR-Media, M., 2016; 561 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Шилов ЕМ, Смирнов АВ, Козловская НЛ. Нефрология. Клинические рекомендации. ГЭОТАР-Медиа, М., 2016; 561 Shilov EM, Smirnov AV, Kozlovskaya NL. Nephrology. Clinical recommendations. GEOTAR-Media, M., 2016; 561 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Raman M, Middleton RJ, Kalra PA, Green D. Estimating renal function in old people: an in-depth review. Int Urol Nephrol 2017;49(11):1979–1988. doi: 10.1007/s11255-017-1682-z</mixed-citation><mixed-citation xml:lang="en">Raman M, Middleton RJ, Kalra PA, Green D. Estimating renal function in old people: an in-depth review. Int Urol Nephrol 2017;49(11):1979–1988. doi: 10.1007/s11255-017-1682-z</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Каюков ИГ, Смирнов АВ, Эмануэль ВЛ. Цистатин С в современной медицине. Нефрология 2012;16(1):22–39 Kayukov IG, Smirnov AV, Emanuel VL. Cystatin C in current medicine. Nephrology 2012;16(1):22-39 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Каюков ИГ, Смирнов АВ, Эмануэль ВЛ. Цистатин С в современной медицине. Нефрология 2012;16(1):22–39 Kayukov IG, Smirnov AV, Emanuel VL. Cystatin C in current medicine. Nephrology 2012;16(1):22-39 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Вельков ВВ. Нормоальбуминуриновая диабетическая нефропатия: патогенез, биомаркеры, интерпретация.Медицинский алфавит. Современная лаборатория 2015;3(11):50–60 Velkov VV. Normoalbuminurinic diabetic nephropathy: pathogenesis, biomarkers, interpretations. Medical alphabet. Modern laboratory 2015;3(11):50–60 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Вельков ВВ. Нормоальбуминуриновая диабетическая нефропатия: патогенез, биомаркеры, интерпретация.Медицинский алфавит. Современная лаборатория 2015;3(11):50–60 Velkov VV. Normoalbuminurinic diabetic nephropathy: pathogenesis, biomarkers, interpretations. Medical alphabet. Modern laboratory 2015;3(11):50–60 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Климонтов ВВ, Еременко НВ, Мякина НЕ, Фазуллина ОН. Цистатин С и коллаген IV типа в диагностике хронической болезни почек у больных сахарным диабетом 2 типа. СД 2015;18(1):87–93. doi: org/10.14341/DM2015187-93 Klimontov VV, Eremenko NV, Myakina NE, Fazullina ON. Cystatin C and collagen type IV in diagnostics of chronic kidney disease in type 2 diabetic patients. DM 2015;18(1):87–93 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Климонтов ВВ, Еременко НВ, Мякина НЕ, Фазуллина ОН. Цистатин С и коллаген IV типа в диагностике хронической болезни почек у больных сахарным диабетом 2 типа. СД 2015;18(1):87–93. doi: org/10.14341/DM2015187-93 Klimontov VV, Eremenko NV, Myakina NE, Fazullina ON. Cystatin C and collagen type IV in diagnostics of chronic kidney disease in type 2 diabetic patients. DM 2015;18(1):87–93 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Delanaye P. Glomerular filtration rate estimation and measurement: The quest for precision. Nephrol Ther 2018;14:S59–S66. doi: 10.1016/j.nephro.2018.02.005</mixed-citation><mixed-citation xml:lang="en">Delanaye P. Glomerular filtration rate estimation and measurement: The quest for precision. Nephrol Ther 2018;14:S59–S66. doi: 10.1016/j.nephro.2018.02.005</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Каюков ИГ. Почему скорость клубочковой фильтрации, а не концентрация креатинина в сыворотке крови? Нефрология 2004;8(4):99–102. doi: 10.24884/1561-6274-2004-8-4-99-102 Kayukov IG. Why glomerular filtration rate rather than creatinine concentration in blood serum? Nephrology 2004;8(4):99–102 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Каюков ИГ. Почему скорость клубочковой фильтрации, а не концентрация креатинина в сыворотке крови? Нефрология 2004;8(4):99–102. doi: 10.24884/1561-6274-2004-8-4-99-102 Kayukov IG. Why glomerular filtration rate rather than creatinine concentration in blood serum? Nephrology 2004;8(4):99–102 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Delanaye P, Cavalier E, Cristolet JP, Delanghe JR. Calibration and precision of serum creatinine and plasma cystatin C measurement: impact on the estimation of glomerular filtration rate. J Nephrol 2014;27(5):467–475. doi: 10.1007/s40620-014-0087-7</mixed-citation><mixed-citation xml:lang="en">Delanaye P, Cavalier E, Cristolet JP, Delanghe JR. Calibration and precision of serum creatinine and plasma cystatin C measurement: impact on the estimation of glomerular filtration rate. J Nephrol 2014;27(5):467–475. doi: 10.1007/s40620-014-0087-7</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Шулькина СГ, Щёкотов ВВ, Антипова АА и др. Сравнение расчетных методов оценки скорости клубочковой фильтрации у больных с метаболическим синдромом. Фундаментальные исследования 2014;4(3):615–618 Shulkina SG, Schekotov VV, Antipova AA et al. Comparison of calculation methods evaluation of glomerular filtration rate in patients with metabolic syndrome. Fundamental research 2014;4(3):615– 618 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Шулькина СГ, Щёкотов ВВ, Антипова АА и др. Сравнение расчетных методов оценки скорости клубочковой фильтрации у больных с метаболическим синдромом. Фундаментальные исследования 2014;4(3):615–618 Shulkina SG, Schekotov VV, Antipova AA et al. Comparison of calculation methods evaluation of glomerular filtration rate in patients with metabolic syndrome. Fundamental research 2014;4(3):615– 618 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Смирнов АВ, Шилов ЕМ, Добронравов ВА и др. Национальные рекомендации. Хроническая болезнь почек: основные принципы скрининга, диагностики, профилактики и подходы к лечению. Нефрология 2012;16(1):89–115. doi: 10.24884/1561-6274-2012-16-1-89-115 Smirnov AV, Shilov EM, Dobronravov VA et al. National guidelines. Chronic kidney disease: basic principles of screening, diagnosis, prevention and treatment approaches. Nephrology 2012;16(1):89–115. (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Смирнов АВ, Шилов ЕМ, Добронравов ВА и др. Национальные рекомендации. Хроническая болезнь почек: основные принципы скрининга, диагностики, профилактики и подходы к лечению. Нефрология 2012;16(1):89–115. doi: 10.24884/1561-6274-2012-16-1-89-115 Smirnov AV, Shilov EM, Dobronravov VA et al. National guidelines. Chronic kidney disease: basic principles of screening, diagnosis, prevention and treatment approaches. Nephrology 2012;16(1):89–115. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Levey AS, Becker C, Inker LA. Glomerular filtration rate and albuminuria for detection and staging of acute and chronic kidney disease in adults: a systematic review. Jama 2015;313(8):837–846. doi: 10.1001/jama.2015.0602</mixed-citation><mixed-citation xml:lang="en">Levey AS, Becker C, Inker LA. Glomerular filtration rate and albuminuria for detection and staging of acute and chronic kidney disease in adults: a systematic review. Jama 2015;313(8):837–846. doi: 10.1001/jama.2015.0602</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Kuster N, Cristol JP, Cavalier E et al. Enzymatic creatinine assays allow estimation of glomerular filtration rate in stages 1 and 2 chronic kidney disease using CKD-EPI equation. Clinica Chimica Acta 2014;428:89–95. doi: 10.1016/j.cca.2013.11.002</mixed-citation><mixed-citation xml:lang="en">Kuster N, Cristol JP, Cavalier E et al. Enzymatic creatinine assays allow estimation of glomerular filtration rate in stages 1 and 2 chronic kidney disease using CKD-EPI equation. Clinica Chimica Acta 2014;428:89–95. doi: 10.1016/j.cca.2013.11.002</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Смирнов АВ, Каюков ИГ, Румянцев АШ. Проблема оценки скорости клубочковой фильтрации при ожирении. Нефрология 2017;21(2):20–23. doi.org/10.24884/1561-6274-2017-21-2-20-23 Smirnov AV, Kayukov IG, Rumyantsev AS. Problem of the assessment of glomerular filtration rate in obesity. Nephrology 2017;21(2):20–23 (In Russ.)</mixed-citation><mixed-citation xml:lang="en">Смирнов АВ, Каюков ИГ, Румянцев АШ. Проблема оценки скорости клубочковой фильтрации при ожирении. Нефрология 2017;21(2):20–23. doi.org/10.24884/1561-6274-2017-21-2-20-23 Smirnov AV, Kayukov IG, Rumyantsev AS. Problem of the assessment of glomerular filtration rate in obesity. Nephrology 2017;21(2):20–23 (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Jassam N, Weykamp C, Thomas Aet al. Post-standardization of routine creatinine assays: are they suitable for clinical applications. Annals of clinical biochemistry 2017;54(3):386–394. doi: 10.1177/0004563216664541</mixed-citation><mixed-citation xml:lang="en">Jassam N, Weykamp C, Thomas Aet al. Post-standardization of routine creatinine assays: are they suitable for clinical applications. Annals of clinical biochemistry 2017;54(3):386–394. doi: 10.1177/0004563216664541</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Delanaye P, Cavalier E, Pottel H. Serum creatinine: not so simple! Nephron 2017;136(4):302–308. doi: 10.1159/000469 669</mixed-citation><mixed-citation xml:lang="en">Delanaye P, Cavalier E, Pottel H. Serum creatinine: not so simple! Nephron 2017;136(4):302–308. doi: 10.1159/000469 669</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Bargnoux AS, Kuster N, Cavalier E et al. Serum creatinine: advantages and pitfalls. J Lab Precis Med 2018;3:71. doi: 10.21037/jlpm.2018.08.01</mixed-citation><mixed-citation xml:lang="en">Bargnoux AS, Kuster N, Cavalier E et al. Serum creatinine: advantages and pitfalls. J Lab Precis Med 2018;3:71. doi: 10.21037/jlpm.2018.08.01</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Myers GL, Miller WG, Coresh J et al. National Kidney Disease Education Program Laboratory Working Group. Recommendations for improving serum creatinine measurement: a report from the Laboratory Working Group of the National Kidney Disease Education Program. Clin Chem 2006;52(1):5–18. doi: 10.1373/clinchem.2005.0525144</mixed-citation><mixed-citation xml:lang="en">Myers GL, Miller WG, Coresh J et al. National Kidney Disease Education Program Laboratory Working Group. Recommendations for improving serum creatinine measurement: a report from the Laboratory Working Group of the National Kidney Disease Education Program. Clin Chem 2006;52(1):5–18. doi: 10.1373/clinchem.2005.0525144</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Dodder NG, Tai SS, Sniegoski LT et al. Certification of creatinine in a human serum reference material by GC-MS and LC-MS. Clin Chem 2007;53(9):1694–1699. doi: 10.1373/clinchem.2007.090027</mixed-citation><mixed-citation xml:lang="en">Dodder NG, Tai SS, Sniegoski LT et al. Certification of creatinine in a human serum reference material by GC-MS and LC-MS. Clin Chem 2007;53(9):1694–1699. doi: 10.1373/clinchem.2007.090027</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Hoste L. Deiteren K, Pottel H et al. Routine serum creatinine measurements: how well do we perform? BMC nephrology 2015;16(1):21. doi: 10.1186/s12882-015-0012-x</mixed-citation><mixed-citation xml:lang="en">Hoste L. Deiteren K, Pottel H et al. Routine serum creatinine measurements: how well do we perform? BMC nephrology 2015;16(1):21. doi: 10.1186/s12882-015-0012-x</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Boutten A, Bargnoux AS, Carlier MC et al. Clinique. Enzymatic but not compensated Jaffe methods reach the desirable specifications of NKDEP at normal levels of creatinine. Results of the French multicentric evaluation. Clin Chim Acta 2013;419:132–135. doi: 10.1016/j.cca.2013.01.021</mixed-citation><mixed-citation xml:lang="en">Boutten A, Bargnoux AS, Carlier MC et al. Clinique. Enzymatic but not compensated Jaffe methods reach the desirable specifications of NKDEP at normal levels of creatinine. Results of the French multicentric evaluation. Clin Chim Acta 2013;419:132–135. doi: 10.1016/j.cca.2013.01.021</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Piéroni L, Delanaye P, Boutten A et al. A multicentric evaluation of IDMS-traceable creatinine enzymatic assays. Clin Chim Acta 2011;412(23-24):2070–2075. doi: 10.1016/j.cca.2011.07.012</mixed-citation><mixed-citation xml:lang="en">Piéroni L, Delanaye P, Boutten A et al. A multicentric evaluation of IDMS-traceable creatinine enzymatic assays. Clin Chim Acta 2011;412(23-24):2070–2075. doi: 10.1016/j.cca.2011.07.012</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Carobene A, Ceriotti F, Infusino I et al. Evaluation of the impact of standardization process on the quality of serum creatinine determination in Italian laboratories. Clin Chim Acta 2014;427:100– 106. doi: 10.1016/j.cca.2013.10.001</mixed-citation><mixed-citation xml:lang="en">Carobene A, Ceriotti F, Infusino I et al. Evaluation of the impact of standardization process on the quality of serum creatinine determination in Italian laboratories. Clin Chim Acta 2014;427:100– 106. doi: 10.1016/j.cca.2013.10.001</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Cakmak O, Altun Z, Ayan NN. Research Article Evaluation of analytical performance specifications of routine clinical biochemistry tests with biological variation-based total allowable error criteria. Int J Med Biochem 2018;1(3):91–98. doi 10.14744/ijmb.2018.39974</mixed-citation><mixed-citation xml:lang="en">Cakmak O, Altun Z, Ayan NN. Research Article Evaluation of analytical performance specifications of routine clinical biochemistry tests with biological variation-based total allowable error criteria. Int J Med Biochem 2018;1(3):91–98. doi 10.14744/ijmb.2018.39974</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Lee SC, Lim LM, Chang EE et al. Effect of differences in serum creatinine estimation methodologies on estimated glomerular filtration rate. Singapore Med J 2019;60(9):468–473. doi: 10.11622/smedj.2019115</mixed-citation><mixed-citation xml:lang="en">Lee SC, Lim LM, Chang EE et al. Effect of differences in serum creatinine estimation methodologies on estimated glomerular filtration rate. Singapore Med J 2019;60(9):468–473. doi: 10.11622/smedj.2019115</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Sandberg S, Fraser CG, Horvath AR et al. Defining analytical performance specifications: Consensus Statement from the 1st Strategic Conference of the European Federation of Clinical Chemistry and Laboratory Medicine. Clin Chem Lab Med 2015;53(6):833–835. doi: 10.1515/cclm-2015-0067</mixed-citation><mixed-citation xml:lang="en">Sandberg S, Fraser CG, Horvath AR et al. Defining analytical performance specifications: Consensus Statement from the 1st Strategic Conference of the European Federation of Clinical Chemistry and Laboratory Medicine. Clin Chem Lab Med 2015;53(6):833–835. doi: 10.1515/cclm-2015-0067</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">Perich C, Minchinela J, Ricós C et al. Biological variation database: structure and criteria used for generation and update. Clin Chem Lab Med 2015;53(2):299–305. doi: 10.1515/cclm-2014-0739</mixed-citation><mixed-citation xml:lang="en">Perich C, Minchinela J, Ricós C et al. Biological variation database: structure and criteria used for generation and update. Clin Chem Lab Med 2015;53(2):299–305. doi: 10.1515/cclm-2014-0739</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">Piéroni L, Bargnoux AS, Delanaye P et al. Did creatinine standardization give benefits to the evaluation of glomerular filtration rate? EJIFCC 2017; 28(4):251–257</mixed-citation><mixed-citation xml:lang="en">Piéroni L, Bargnoux AS, Delanaye P et al. Did creatinine standardization give benefits to the evaluation of glomerular filtration rate? EJIFCC 2017; 28(4):251–257</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Carobene A, Marino I, Coşkun A et al. The EuBIVAS Project: Within- and Between-Subject Biological Variation Data for Serum Creatinine Using Enzymatic and Alkaline Picrate Methods and Implications for Monitoring. Clin Chem 2017;63(9):1527–1536. doi: 10.1373/clinchem.2017.275115</mixed-citation><mixed-citation xml:lang="en">Carobene A, Marino I, Coşkun A et al. The EuBIVAS Project: Within- and Between-Subject Biological Variation Data for Serum Creatinine Using Enzymatic and Alkaline Picrate Methods and Implications for Monitoring. Clin Chem 2017;63(9):1527–1536. doi: 10.1373/clinchem.2017.275115</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Ricós C, Perich C, Boned B et al. Standardization in laboratory medicine: Two years’ experience from category 1 EQA programs in Spain. Biochem Med 2019;29(1):1–18. doi: 10.11613/BM.2019.010701</mixed-citation><mixed-citation xml:lang="en">Ricós C, Perich C, Boned B et al. Standardization in laboratory medicine: Two years’ experience from category 1 EQA programs in Spain. Biochem Med 2019;29(1):1–18. doi: 10.11613/BM.2019.010701</mixed-citation></citation-alternatives></ref><ref id="cit32"><label>32</label><citation-alternatives><mixed-citation xml:lang="ru">Lee ES, Collier CP, White CA. Creatinine assay attainment of analytical performance goals following implementation of IDMS standardization: further improvements required. Can J Kidney Health Dis 2017;23(4):2054358117693353. doi: 10.1177/2054358117693353</mixed-citation><mixed-citation xml:lang="en">Lee ES, Collier CP, White CA. Creatinine assay attainment of analytical performance goals following implementation of IDMS standardization: further improvements required. Can J Kidney Health Dis 2017;23(4):2054358117693353. doi: 10.1177/2054358117693353</mixed-citation></citation-alternatives></ref><ref id="cit33"><label>33</label><citation-alternatives><mixed-citation xml:lang="ru">Helmersson-Karlqvist J, Ridefelt P, Boija EE, Nordin G. Lower creatinine concentration values and lower inter-laboratory variation among Swedish hospital laboratories in 2014 compared to 1996: results from the Equalis external quality assessment program. Clin Chem Lab Med 2019;57(6):838–844. doi: 10.1515/cclm-2018-0670</mixed-citation><mixed-citation xml:lang="en">Helmersson-Karlqvist J, Ridefelt P, Boija EE, Nordin G. Lower creatinine concentration values and lower inter-laboratory variation among Swedish hospital laboratories in 2014 compared to 1996: results from the Equalis external quality assessment program. Clin Chem Lab Med 2019;57(6):838–844. doi: 10.1515/cclm-2018-0670</mixed-citation></citation-alternatives></ref><ref id="cit34"><label>34</label><citation-alternatives><mixed-citation xml:lang="ru">Wan Z, Zhang L, Ke P, et al. A Pre-Analytical Performance Evaluation for Measurement of Serum Creatinine in a Multicenter Clinical Trial Study. Clin Lab 2019;65(10). doi: 10.7754/Clin.Lab.2019.190352</mixed-citation><mixed-citation xml:lang="en">Wan Z, Zhang L, Ke P, et al. A Pre-Analytical Performance Evaluation for Measurement of Serum Creatinine in a Multicenter Clinical Trial Study. Clin Lab 2019;65(10). doi: 10.7754/Clin.Lab.2019.190352</mixed-citation></citation-alternatives></ref><ref id="cit35"><label>35</label><citation-alternatives><mixed-citation xml:lang="ru">ГОСТ Р 53133.1-2008. Национальный стандарт Российской Федерации. Технологии лабораторные клинические. Контроль качества клинических лабораторных исследований GOST P 53133.1-2008. National standard of the Russian Federation. Clinical laboratory technologies. Quality control of clinical laboratory tests</mixed-citation><mixed-citation xml:lang="en">ГОСТ Р 53133.1-2008. Национальный стандарт Российской Федерации. Технологии лабораторные клинические. Контроль качества клинических лабораторных исследований GOST P 53133.1-2008. National standard of the Russian Federation. Clinical laboratory technologies. Quality control of clinical laboratory tests</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
