Dipstick Spot urine pH does not accurately represent 24 hour urine PH measured by an electrode
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RE: Dipstick Spot urine pH does not accurately represent 24 hour urine PH measured by an electrode
OBJECTIVES To determine whether spot urine pH measured by dipstick is an accurate representation of 24 hours urine pH measured by an electrode. MATERIALS AND METHODS We retrospectively reviewed urine pH results of patients who presented to the urology stone clinic. For each patient we recorded the most recente pH result measured by dipstick from a spot urine sample that preceded the result of...
متن کاملOptimization of urinary dipstick pH: Are multiple dipstick pH readings reliably comparable to commercial 24-hour urinary pH?
PURPOSE Accurate measurement of pH is necessary to guide medical management of nephrolithiasis. Urinary dipsticks offer a convenient method to measure pH, but prior studies have only assessed the accuracy of a single, spot dipstick. Given the known diurnal variation in pH, a single dipstick pH is unlikely to reflect the average daily urinary pH. Our goal was to determine whether multiple dipsti...
متن کاملEstimating 24-Hour Urine Sodium Level with Spot Urine Sodium and Creatinine
The 24-hr urine sodium excretion level was estimated based on the spot urine sodium, and the efficacy of the formula was validated to determine the status of low salt intake <100 mEq Na/day. The 24-hr urine samples were collected from 400 patients. The 24-hr urine creatinine level was estimated with the use of three formulas: a newly derived Korean equation (E24UCR_K), and Tanaka (E24UCR_T) and...
متن کاملCorrelation versus agreement; protein/creatinine ratio in spot urine and 24-hour urine protein.
Montero et al. do report the 95% limits on the Bland-Altman plot, perhaps the authors could have reported the 95% limits of agreement for a specific number of thresholds of proteinuria for example <300mg, <3.5 grams or >3.5 grams individually which would be useful for clini-cians trying to interpret spot urine pro-tein/creatinine ratio. I worry that readers of this excellent study may be left f...
متن کاملCorrelation between the protein/creatinine ratio in spot urine and 24-hour urine protein.
INTRODUCTION Measurement of the protein content in a 24-hour urine sample is the definitive method of establishing the presence of abnormal proteinuria. However, the urine collection is cumbersome. The spot urine protein to creatinine ratio seems to be a reliable diagnostic tool for urine protein measurement. OBJECTIVE Our aim was to evaluate the spot urine protein/creatinine ratio against 24...
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ژورنال
عنوان ژورنال: International braz j urol
سال: 2016
ISSN: 1677-5538
DOI: 10.1590/s1677-5538.ibju.2015.0071