What is a plus sign for urine occult blood?

A plus sign of urine occult blood may be caused by prolonged urine retention or inadequate urination, nephritis, ureteral stones, etc.

If the examiner holds urine for a long time or urinates inadequately, excessive concentrated urine may cause false positive reaction of urine occult blood test paper.

2. Nephritis

inflammatory substances continuously stimulate the tissues of the kidney, which may cause hematuria in the examiner, thus accompanied by positive indicators of urine occult blood.

3. Ureteral stones When there

are a certain number of stones in the ureter, it may cause local mucosal tissue damage during exercise, accompanied by blood discharge, causing a plus sign of urine occult blood.

It is recommended that the examiner with abnormal indicators of urine occult blood needs to actively cooperate with the doctor for further examination to clarify the cause.