Abstract
The 24-hour proteinuria has been considered, for a long time, to be the “gold standard” for the measurement of proteinuria; in order to diagnose and evaluate of the severity of many diseases. However, this assay method presents several constraints, notably those related to the difficulty of collecting the urine sample as well as its transportation to the laboratory, in addition to various physiological variations in protein excretion regarding the state of hydration, physical activity or even the postprandial period. Therefore, the evaluation of proteinuria using the ratio of proteinuria to creatinuria on a urine sample appears more than satisfactory in many situations, as an adequate alternative to the 24-hour proteinuria,
The final aim of our study was to find out if the collection of a urine sample and the calculation of the P/C ratio, could substitute a 24-hour urinary protein samples from kidney disease patients. All the tests were performed at the biochemistry laboratory, using the Alinity automated system (Abbott®).
The overall results show an excellent agreement between the two methods with a kappa coefficient of (0.91). This test, which is simpler, less expensive and has a shorter turnaround time, will also improve the time management of severe pathology, unlike the current situation where the 24-hour proteinuria result is known more than 24 hours after admission.