Porphyrins, Serum Total
Test Mnemonic
SPORPH
CPT Codes
- 84311 - QTY (1)
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Serum | No additive (Red) | Frozen | Protect specimen from light. Separate serum from cells within 1 hour of collection. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: Unacceptable |
| Frozen | After separation from cells: 1 month |
| Refrigerated | After separation from cells: 4 days |
Days Performed
Sun, Tue, Thu
Turnaround Time
2 - 6 days
Methodology
| Name | Description |
|---|---|
| Fluorometry (FLM) |
Reference Range
| Porphyrins, Serum Total | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 0 - 15 | nmol/L |
Special Info
Hemolyzed samples and frozen whole blood are unacceptable. CRITICAL - Protect from light during collection, storage and shipment. Wrap in foil ASAP. Transport in amber tubes may not be sufficient protection to prevent destruction of porphyrins.
Clinical Info
Useful for evaluation of cutaneous photosensitivity to rule out porphyrin disorders, particularly erythropoietic protoporphyria.