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false negative tests as can a very acid urine (ph 5.0 or less) or test strips that have been overexposed to air or are outdated.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 9/17/2015
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Wrong test: A urine culture looks for bacteria growing, it can not detect red blood cells hematuria without visible red blood cells can result from hemolyzed rbcs or rhabdomyolosis. Rbcs are frequently seen without protein in urologic disease.
Answered 12/8/2015
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