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Test ID:
PBG
Porphyrin Precursors (Delta-Aminolevulinic Acid and Porphobilinogen), 24 hr Urine
Test Overview
Clinical Utility
To aid in the diagnosis and treatment of porphyrias
Analytical Platform
Bio-Rad Column
Result Included
Creatinine; δ-Aminolevulinic Acid (ALA); Porphobilinogen (PBG)
Aliases/Synonyms
D-ALA; PBG
Specimen
Specimen Type
Urine (24 hr)Containers
Preferred Containers
Amber urine collection bottle
Volume
Sample Volume
20 mL
Collection & Handling
Collection Instructions
Keep cool during collection and protect from light.
Handling Information
Store and submit specimen protected from light.
Freeze immediately. Store and send frozen.
Additional Information
Provide 24 hour urine volume and collection date.
Stability
| Refrigerated | Frozen |
|---|---|
| 2 days | 1 month |
Rejection Criteria
| Criteria | Specification |
|---|---|
| Specimen | Not protected from light |
Performance & Interpretation
Turnaround Time
10 days
Results
Name
Units
Reference Range
Conversion
-
Creatininemmol/dMale ≥18 y: 7.1 - 17.7
Female ≥18 y: 5.3 - 15.9mg/d x 0.00884
Comment
Creatinine reference values are not available for individuals ≤17y
-
Porphobilinogenµmol/dAdult: <9.0µg/d x 0.00442
Comment
Reference values are not available for individuals ≤17 y
-
δ-Aminolevulinic Acidµmol/dAdult: <50µg/d x 0.00763
Comment
Reference values are not available for individuals ≤17 y
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| PBG | Creatinine 24h/Timed Urine (per Day) | 20251 | mmol/d |
| ALA 24h/Timed Urine | 20307 | umol/d | |
| PBG 24h/Timed Urine | 20306 | umol/d |
Test Version
Last Updated
2023-09-25