proteinuriawhat value is the dipstick the value of the urinary dipstick in the assessment of proteinuria was investigated in a study correlating laboratory measurements of protein and albumin against the dipstick protein in the same samples of urine 94 patients 100 admissions were studied at the royal air force renal unit each patient collecting two 24h urine samples along with each 24h sample 10ml aliquots of urine were obtained at 3 designated times during the day for both ward dipstick testing and laboratory assay or more on the dipstick correlated with abnormal proteinuria greater than or equal to 150 mg24 h in 88 of cases whilst trace values straddled the level of significant proteinuria further differentiation of trace was possible by repeat testing during the day the subsequent presence of a dipstick negative during that day correlated with normality in all but 5 of cases in order to ensure detection of renal disease presenting as isolated orthostatic proteinuria assay of the midmorning sample is recommended