A 56-year-old female asked:
Had ua which shows moderate microsccopic blood in urine but when cultured shows no RBC or WBC or protein. How can be moderate blood but no rbc?
1 doctor answer
Dr. Martin Raff answered
55 years experience in Infectious Disease
Hematuria: False positives include contamination with vaginal or menstrual bleeding, betadine® solution, myoglobinuria (breakdown of muscle cells in the urine), dehydration, and bacterial enzymes from vaginal or bladder infections. Vitamin c can produce false negative tests as can a very acid urine (ph 5.0 or less) or test strips that have been overexposed to air or are outdated.
Answered on Sep 17, 2015
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