D-ALA; PBG
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Porphyrin Precursors (Delta-Aminolevulinic Acid and Porphobilinogen), 24 hr Urine
Test ID: PBG
Test
Aliases/Synonyms
Report Includes
Creatinine; δ-Aminolevulinic Acid (ALA); Porphobilinogen (PBG)
Specimens
Urine (24 hr)
Clinical Utility
To aid in the diagnosis and treatment of porphyrias
Test Location
The Ottawa Hospital General Campus, 501 Smyth Road, Ottawa ON K1H 8L6
Test Version
25-Sep-2023
Specimen
Specimens
Urine (24 hr)
Collection Containers
Preferred
Amber urine collection bottle
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 | 2 days |
|---|---|
| Frozen | 1 month |
Rejection Criteria
| Specimen | Not protected from light |
|---|
Test Version
25-Sep-2023
Performance / Interpretation
Turnaround Time
10 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Creatinine | mmol/d |
|
mg/d x 0.00884 | |
|
Creatinine reference values are not available for individuals ≤17y
|
||||
| Porphobilinogen | µmol/d |
|
µg/d x 0.00442 | |
|
Reference values are not available for individuals ≤17 y
|
||||
| δ-Aminolevulinic Acid | µmol/d |
|
µg/d x 0.00763 | |
|
Reference values are not available for individuals ≤17 y
|
||||
Test Location
The Ottawa Hospital General Campus, 501 Smyth Road, Ottawa ON K1H 8L6
Test Version
25-Sep-2023
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| PBG | 20251Creatinine 24h/Timed Urine (per Day) | mmol/d |
| 20307ALA 24h/Timed Urine | umol/d | |
| 20306PBG 24h/Timed Urine | umol/d |
Test Version
25-Sep-2023