Albumin is a protein normally present in blood but not in urine.

Small amounts of albumin in urine (microalbuminuria) can be an early sign of kidney disease.

Clinical uses include:

Screening for diabetic nephropathy.

Monitoring hypertensive patients for kidney damage.

Detecting early renal impairment before progression to overt proteinuria.

Often performed as a spot urine test or 24‑hour urine collection.

Helps guide preventive treatment to slow kidney disease progression.

Analyte: Urinary albumin concentration (mg/L or mg/day).

Normal Range (varies by lab):

< 30 mg/day (normal)

30–300 mg/day (microalbuminuria)

300 mg/day (macroalbuminuria/proteinuria)

Abnormal Findings:

Microalbuminuria: Early kidney damage, often due to diabetes or hypertension.

Macroalbuminuria: Advanced kidney disease.

Clinical Use:

Provides an early marker of kidney damage.

Helps guide management of diabetes and hypertension.

Supports renal disease monitoring and prevention strategies.