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San Jose, CA
A 64-year-old female asked:

Handed in a urine sample pale yellow on a sat results back and showed sm blood no rbc but color was stated as red. why would the color change from what was handed in. ?

1 doctor answer1 doctor weighed in
Dr. Hiep Le
Dr. Hiep Leanswered
Nephrology and Dialysis 43 years experience
If the urine is not tested right away, the red cells can be hemolyzed which give the urine a reddish color, the dipstick is still positive for blood but microscopic exam can be (-) for red cells. However, your result only showed small blood by dipstick test so it did not correlate well with the hemolyzed red cells and red urine color.
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Last updated Sep 23, 2021

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