My son, aged 37 yrs, got his annual medical checkup done. His dipstick urinalysis is abnormal with blood in urine 1+(A). But microscopic test is normal. What could be the reason?

Blood on the dipstick can be a false positive if no blood cells are seen in the urine on microscopic examination.  This can be the result of interfering substances in the urine that turn the dipstick positive but is not accurate at detecting blood cells if none are present on microscopic examination.  I suggest that he consult with his physician to see if this might be the case.

 

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