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Albumin:creatinine ratio (urine)

Category Biochemistry
Test background

Also known (incorrectly) as microalbumin. Microalbuminuria (trace amounts of albumin in the urine) is an early indicator of diabetic nephropathy and is usually measured as the albumin:creatinine ratio.

Clinical Indications

Diagnosis of diabetic nephropathy in diabetics and high-risk populations, eg. those with essential hypertension. Gross proteinuria should be assessed using urine protein.

Reference range


Random: <3 mg/mmol creatinine
24 hour: <30 mg/24 h
Sample & container required Random urine in universal container (preferred) or 24 hour urine collection (plain)
Sample volume Random urine: 0.5 mL or 24 hour urine collection
Turnaround time Random urine: 1 day
24 hour urine collection: 2 days