Microalbumin, 24 Hour Urine

Test Code

Quest Code

CPT Codes

CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen
5 mL aliquot from a well-mixed 24-hour urine, submitted in a plastic leak-proof container - no preservative

Minimum Volume
2 mL

Submit 5 mL aliquot from a well-mixed 24-hour urine, submitted in a plastic, leakproof container.
Do not use preservatives. Record 24-hour urine volume on test request form and urine container

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 1 year

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acid preserved urine


Setup Schedule
Set up: Daily; Report available: Next day

Reference Range
Albumin, 24-hour Ur <30 mg/24 h
Albumin, 24-hour Ur <20 mcg/min

Clinical Significance
Albumin excreted in the urine (Microalbumin) is a sensitive marker of nephropathy. It is used to screen for early renal disease in diabetic patients.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.