Can we reduce the interference of vitamin C and PH in urinalysis?

Urinalysis is often interfered by vitamin C and PH. This study was to evaluate the interference of PH in urinalysis, minimize risk make effective communication. 732 leftover urine samples which concentration 0.0 mmol/L either test-strip results (Glucose, Blood, Bilirubin, Leucocyte, Nitrite, Protein, Ketone) positive that were collected. The test checked out using these samples. When chemical protein module positive, sulfosalicylic acid performed confirm results. About 27% positive. Adequate would interfere with result GLU, BIL, BLD, but not KET, PRO, WBC, NIT (p-value < 0.05). False-positive occurred at any samples, higher when greater than or equal 8.0. In summary, laboratory should pay more attention its conditions. Also, do help guarantee accuracy urinalysis give comments doctors achieve