Does the Exposure of Urine Samples to Air Affect Diagnostic Tests for Urine Acidification
Clinical Journal of the American Society of Nephrology, 08/17/2012
Yi JH et al. – The calculation of buffer reactions in a hypothetical acidic urine predicted a negligible effect on urine pH on loss of CO2 by air exposure, which was empirically proven by the experimental study. Therefore, exposure of urine to air does not substantially alter the results of diagnostic tests for urine acidification, and urine collection under oil is not necessary.