Urine occult blood is detected by a routine urine test, which includes urine red blood cells (RBCS). Generally, in the case of normal red blood cells, the urine red blood cell column is negative and is represented by the "-" sign. If the number of red blood cells is increased, in terms of its number, a small number can be called urinary occult blood, and urinary occult blood itself can also be used as an indicator, the severity is indicated by "+".

If a routine urine test is performed during or near a woman's period, or just after her period, a small amount of blood may be mixed with the urine sample, resulting in a weak positive urine occult blood test. Therefore, it is necessary to choose non-menstrual period for review.

If the patient has a history of fatigue, muscle weakness, soreness and other symptoms, it may be due to rhabdomyolysis resulting in myoglobin emia, resulting in elevated myoglobin in the urine, as a transient urine occultemia positive. No special treatment is needed at this time, just pay attention to rest and avoid overexertion.

Urinary tract related inflammatory diseases, such as cystitis, nephritis, urinary tract infection, etc., may have mild bleeding, so that urine tests may also be positive for occult blood weakness, at which time treatment for inflammation is required.

Urinary calculi:

Such as kidney stones, ureteral stones, bladder stones and so on. The passage of stones may damage the urinary tract, which may cause urine to appear occult weak positive. Extracorporeal lithotripsy, such as by laser, is required. At the same time, in daily life should eat less food containing high oxalate and drink more water.

Urinary tumors:

If there is a urinary tract tumor, such as ureter tumor, bladder tumor, etc., when there is pressure or damage to the urinary tract may also lead to occult weak positive. At this time, it is necessary to review urine routine, and conduct B-ultrasound and CT to confirm the diagnosis. If it is a space-occupying mass, surgical removal and histological examination are required to determine its nature.

In short, when occult weak blood is found positive, the content of hemoglobin and myoglobin in urine can be determined or B-ultrasound and CT examinations can be performed to rule out the occupying abnormality, and targeted treatment can be taken according to the specific cause.