Microalbumin (mAlb) - Urine

Microalbumin (mAlb) is a highly sensitive urine test that detects small amounts of albumin leaking into the urine, a sign of early kidney damage that standard urine protein tests can miss. It is particularly valuable for people with diabetes, high blood pressure, or a family history of kidney disease, as well as anyone at risk of cardiovascular or renal complications. The test is performed on a simple urine sample, with results typically available within a few working days.

What it screens for

• Urine microalbumin (mAlb): Measures the concentration of albumin in urine. Normally, healthy kidneys filter albumin and keep it in the bloodstream, so only trace amounts appear in urine. Elevated levels (microalbuminuria) indicate that the kidney's filtration barrier is becoming leaky, often due to diabetes, hypertension, or early nephropathy. It can also signal increased cardiovascular risk.

Why it matters

Microalbuminuria is one of the earliest warning signs of kidney disease and a powerful predictor of heart attacks, strokes, and heart failure. Detecting it early allows for timely interventions, such as better blood sugar and blood pressure control, lifestyle changes, and protective medications, that can slow or even halt kidney damage and reduce cardiovascular risk. For people with diabetes or hypertension, regular microalbumin screening is a cornerstone of preventive care.