Delta Aminolevulinic Acid, 24-Hour Urine
Test Summary
ALA is a precursor to uroporphyrin, coproporphyrin, and protoporphyrin. Concentrations of ALA are greatly increased in many patients with acute neurological forms of porphyria's and in some patients with chronic alcohol abuse.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
2 mL urine from a 24-hour collection - no preservative - protect from light
Minimum Volume
0.6 mL
Instructions
Collect without preservative. Refrigerate during and after collection.
Wrap container in aluminum foil to protect from light.
Please specify on the request form and on the urine container the total 24-hour urine volume.
Wrap container in aluminum foil to protect from light.
Please specify on the request form and on the urine container the total 24-hour urine volume.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: Unacceptable
- Refrigerated: 7 days
- Frozen: 30 days
Limitations
N/A
Other Acceptable Specimens
Urine preserved with 25 mL 6N HCl, or 10 mL concentrated glacial acetic acid preservative added after collection, and catharized urine in a sterile, plastic, screw-capped container - protected from light
Unacceptable Specimens
Received room temperature • Not protected from light
Order Code
DALAU
EPIC (Premier) Code
LAB3328
Includes
CPT code 81050 may be added at an additional charge for volume measurement
CPT Code
- 82135
Billing Code
- 670250
CPT Statement
Methodology
Colorimetric (C)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
Delta ALA, 24-Hour Urine
Creatinine, 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 |
Setup Schedule / Expected Turnaround Time
Tuesday, Thursday, Saturday; Report available: 1 day
Specimen Collection
Special Instructions
N/A
Preferred Specimen
2 mL urine from a 24-hour collection - no preservative - protect from light
Minimum Volume
0.6 mL
Instructions
Collect without preservative. Refrigerate during and after collection.
Wrap container in aluminum foil to protect from light.
Please specify on the request form and on the urine container the total 24-hour urine volume.
Wrap container in aluminum foil to protect from light.
Please specify on the request form and on the urine container the total 24-hour urine volume.
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: Unacceptable
- Refrigerated: 7 days
- Frozen: 30 days
Limitations
N/A
Other Acceptable Specimens
Urine preserved with 25 mL 6N HCl, or 10 mL concentrated glacial acetic acid preservative added after collection, and catharized urine in a sterile, plastic, screw-capped container - protected from light
Unacceptable Specimens
Received room temperature • Not protected from light
Result Information
Methodology
Colorimetric (C)
Testing Laboratory
N/A
Reference Range
Delta ALA, 24-Hour Urine
Creatinine, 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 |
Setup Schedule / Expected Turnaround Time
Tuesday, Thursday, Saturday; Report available: 1 day