Urine Strip - Wiener lab
2014-5-8 · Urine strip test strips are for “in vitro” diagnostic use and C. ... 6-Carefully compare the results with the color chart on the container, keeping the strip horizontally and under a ... Thus, a negative result does not completely discard urine contamination. The test turns negative with ascorbic acid concentrations ≥ 50 mg/dl.
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