ALA(Aminolevulinic Ac) 24 hrs (S51659)

Test Code
ALA (S51659)

Quest Code

CPT Codes
82135 (x2)

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

Preferred Specimen
2 mL unpreserved 24 hour urine

Minimum Volume
0.6 mL

Other Acceptable Specimens
Urine preserved with 25 mL 6N HCl or 10 mL concentrated glacial acetic acid, preservative added after collection, and catheterized urine in a sterile, plastic, screw-capped container

Collect without preservative. Refrigerate during and after collection. Wrap container in aluminum foil to protect from light. Please sepecify on the request form and on the urine container the total 24-hour urine volume.

Transport Container
Sterile, leak-proof container, foil wrapped - protected from light

Specimen Stability
Refrigerated: 7 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Not protected from light

Colorimetric (C)

Setup Schedule
Mon, Wed, Fri

Report Available
2 days

Reference Range
Delta ALA, 24-Hour Urine
Adults <4.5 mg/24 h

Creatinine, 24-Hour Urine
3-8 Years 0.11-0.68 mg/24 h
9-12 Years 0.17-1.41 mg/24 h
13-17 Years 0.29-1.87 mg/24 h
Adults 0.63-2.50 mg/24 h

Performing Laboratory
Quest Diagnostics Nichols Institute Chantilly
14225 Newbrook Dr
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.