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:: Volume 28, Issue 2 (winter 2018) ::
MEDICAL SCIENCES 2018, 28(2): 162-169 Back to browse issues page
Evaluation of the performance of common kits for the measurement of creatinine in serum and urine: are the results of these methods suitable for clinical use?
Fereshteh Atabi1, Reza Mohammadi *2
1- Department of Biochemistry and Pharmacology, Islamic Azad University, Tehran Medical Sciences Branch, Tehran, Iran.
2- Secretary of Biochemistry Board of External Quality Assessment Program, Iranian Association of Clinical Laboratory Doctors, Tehran, Iran , r.mohammadi.bio@gmail.com
Abstract:   (985 Views)
Background: Measuring serum and urine creatinine level is currently the most common method for assessing renal function. For this purpose, Jaffe’s method is most commonly used. The inconsistency in the results obtained from one single sample may be due to poor quality of the measurement method, inappropriate calibration, or improper use of the measurement method by the laboratory.
Materials and methods: To evaluate the performance of creatinine measurement methods, five commonly used kits in Iran, i.e. Pars Azmon, Pishtaz Teb, Audit, Man and Bionik, were evaluated for uncertainty, detection capabilities, linearity and comparison of results. The results were statistically analyzed by using the coefficient of variation, T-test and linear regression and clinically evaluated based on the allowable total error.
Results: The imprecision and detection capabilities of the kits were acceptable, but linearity results were not acceptable according to measurement range provided by the manufacturers, exept for Audit and Bionik kits. In addition, statistically in all cases and clinically in most cases, there was a significant difference between the results of each kit with the total mean results as the target level.
Conclusion: According to the results of this study, which have been performed in Iran for the first time, it is necessary to replace the Jaffe's method creatinine measurements with the enzymatic methods. In addition, the homogenization and standardization of these methods in comparison to a reference method is necessary.
Keywords: Creatinine, Jaffe's method, Method Evaluation, Chronic kidney disease.
Full-Text [PDF 732 kb]   (305 Downloads)    
Semi-pilot: Survey/Cross Sectional/Descriptive | Subject: Cilinical Biochemistry
Received: 2017/11/1 | Accepted: 2018/03/5 | Published: 2018/06/19
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Atabi F, Mohammadi R. Evaluation of the performance of common kits for the measurement of creatinine in serum and urine: are the results of these methods suitable for clinical use? . MEDICAL SCIENCES. 2018; 28 (2) :162-169
URL: http://tmuj.iautmu.ac.ir/article-1-1409-en.html

Volume 28, Issue 2 (winter 2018) Back to browse issues page
فصلنامه علوم پزشکی دانشگاه آزاد اسلامی واحد پزشکی تهران Medical Science Journal of Islamic Azad Univesity - Tehran Medical Branch
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