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Test ID:
PORPHQ P
Porphyrins Quantitation and Fractionation, Serum/Plasma
Test Overview
Method
High Performance Liquid Chromatography (HPLC)
Result Included
Uroporphyrin; Heptacarboxyporphyrin; Hexacarboxyporphyrin; Pentacarboxyporphyrin; Coproporphyrin; Protoporphyrin; Total Porphyrins; Interpretation
Specimen
Specimen Type
Gel-separator tubes are not acceptableSerum
Plasma (EDTA)
Plasma (Na Heparin)
Containers
Preferred Containers
Plasma (Na Heparin) green top
Acceptable Containers
Serum red top; Plasma (EDTA) lavender top
Volume
Sample Volume
2 mL
Minimum Volume
0.4 mL
Specimen Comment
Avoid gel separator tubes.
Collection & Handling
Collection Instructions
Collect in foil-covered tube to protect from light. Avoid hemolysis.
Handling Information
Store and submit specimen protected from light in an amber vial.
Freeze immediately after separation. Store and send frozen.
Stability
| Ambient | Refrigerated | Frozen |
|---|---|---|
| 8 hours | 8 hours | 90 days |
Rejection Criteria
| Criteria | Specification |
|---|---|
| Hemolysis | Present |
| Specimen | Gel separator tube, not frozen or not protected from light |
Performance & Interpretation
Turnaround Time
11 days
Results
Name
Units
Reference Range
Conversion
-
Uroporphyrinµg/L≤0.2
-
Heptacarboxyporphyrinµg/L≤0.2
-
Hexacarboxyporphyrinµg/L≤0.3
-
Pentacarboxyporphyrinµg/L≤0.4
-
Coproporphyrinµg/L≤0.8
-
Protoporphyrinµg/L0.4 - 4.8
-
Total Porphyrinsµg/L1.0 - 5.6
-
Interpretation
Referral Location
Out-of-Country
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| PORPHQ P | UROPORPHYRIN | 39600 | mcg/L |
| HEPTACARBOXYPORPHYRIN | 39602 | mcg/L | |
| HEXACARBOXYPORPHYRIN | 39604 | mcg/L | |
| PENTACARBOXYPORPHYRIN | 39606 | mcg/L | |
| COPROPORPHYRIN | 39608 | mcg/L | |
| PROTOPORPHYRIN | 39610 | mcg/L | |
| TOTAL PORPHYRINS | 39612 | mcg/L | |
| INTERPRETATION | 39614 |
Test Version
Last Updated
2021-06-16