Causes of red-tea colored urine include physiological and pathological. Pathology is mainly seen in hemoglobinuria.
1. Physiological: healthy people’s urine is mostly light yellow or orange color when observed by the naked eye. When consuming foods containing a lot of pigment, such as dragon fruit, the color of urine may be abnormal.
2. Pathological: hemoglobinuria urine color is dark red, brownish red, tea color, and even soy sauce color in severe cases, seen in the disease of intravascular hemolysis. Red blood cells are destroyed in the blood circulation, hemoglobin within the red blood cells free into the blood, free hemoglobin can be filtered through the glomerulus, if the hemoglobin exceeds the reabsorption capacity of the proximal tubule, hemoglobinuria occurs.
The presence of hemoglobinuria indicates rapid intravascular hemolysis. It is seen in patients with serotoninosis when they consume fava beans, paroxysmal sleep hemoglobinuria, and blood transfusion reactions with incompatible blood groups.
Red tea-colored urine, such as the exclusion of physiological causes, should be timely to the regular hospital, the doctor to clarify the cause of the disease, to give targeted treatment.