This is one of the most important preventative tests for anyone with diabetes or high blood pressure. It's a highly sensitive test that detects tiny amounts of a specific protein, albumin, in your urine. This 'microalbuminuria' is the earliest detectable sign of kidney damage. Catching this early gives you a powerful opportunity to intervene and protect your kidney function. The test requires a complete 24-hour urine collection for the most accurate average. This is the gold-standard, early-warning test for diabetic kidney disease. Take proactive control of your health.