Spot albumin is a biochemical test that evaluates urine protein in a urine test. Under normal circumstances, urine does not contain albumin, when albumin appears in the urine, can be detected positive spot albumin. 1. Physiological urinary protein: A transient increase in albumin can occur in the urine during strenuous exercise, heavy physical labor, fever and other conditions. In addition, it can also appear when the body position changes, but the amount is usually low. 2. Pathologic urinary protein: seen in a variety of renal and non-renal diseases, such as acute and chronic nephritis, nephrotic syndrome and other diseases, mostly persistent proteinuria. Therefore, in the detection of urine spot albumin, should promptly go to the regular hospital, under the guidance of the doctor for treatment.