Renal function is normal but urine occult blood positive if by physiological reasons such as specimen contamination, eating urine reddening drugs, etc., do not need special treatment, if by pathological reasons such as renal disease, urinary stones, urinary tumors, trauma, coagulation dysfunction, etc., need to be directed to the primary pathology for treatment.
1. Physiological causes:
(1) Specimen contamination: if a woman carries out routine urine examination during menstruation accidentally mixes menstrual blood into the urine specimen, she may also have positive urinary occult blood.
(2) Consumption of drugs: Consumption of drugs that make the urine red, such as blood, usually after stopping the drug can return to normal.
2. Pathologic causes:
(1) renal disease: can be seen in IgA nephropathy, nephritis syndrome patients, often combined with positive urinary occult blood, some patients with normal renal function.
(2) urinary stones: for example, ureteral stones, when the stone moves with the urine, it may cut through the ureteral mucosa, resulting in local hemorrhages, showing positive urinary occult blood.
(3) Urinary system tumor: erythrocyturia can be seen in urinary system tumor, and renal function is normal in some patients.
(4) Urologic trauma: the morphology of erythrocytes is usually normal, and renal function is usually normal.
(5) Coagulation disorders: disorders of the coagulation system lead to blood leakage from the urine, showing positive urinary occult blood.
Kidney function is normal but urine occult blood positive can be seen in a variety of diseases, it is recommended to timely to the regular hospital, follow the doctor’s instructions for relevant examinations, in the doctor’s help to clarify the nature, and targeted treatment or treatment.