Occult blood does not represent with nephritis

In the outpatient, we often meet some one that has occult blood in the regular urine test. No uncomfortable symptom. The patients often feel nervous and thought they have nephritis. And some people even looking for hospitals in every places, which wastes many time and energy. In fact, this view is unilateral.

Generally, there are more red cells in the urine, we called it as blood urine. The mainly reason of blood urine is urinary systemic disease, systemic disease, Urinary tract adjacent tissue diseases and other reasons. Generally, the most common reason is urinary tract disease, glomerular disease, kidney stone, infection and tumor.

There are two conditions of occult blood appears in the urine test but no red cells in the microscopic examination, one condition is that there is dissociative hemoglobin in the urine, which is called as hemoglobinuria, the other condition is that there are amounts of myohemoglobin in the urine, which is called as  myoglobinuria

The clinical meaning of occult blood is mainly to identify hemoglobinuria. while its positive doesn’t mean whether they have nephritis or not. Generally, occult blood will appear in transfusion reaction with different blood type, favism, paroxysmal nocturnal hemoglobinuria, extensive burns and some certain medicines and occult blood caused by inflammation.