Porphyrins, Total, Plasma or Serum
Test Mnemonic
SPORPH
CPT Codes
- 84311 - QTY (1)
Includes
- Porphyrins, Total, Plasma/Serum
- Porphyrins, Total, Plasma/Serum, Interp.
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 during collection, storage, and shipment. Separate serum from cells ASAP or within 1 hour of collection. Transfer serum to amber transport tube. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 mL | Plasma | Sodium heparin (Green) | Frozen | Protect specimen from light during collection, storage, and shipment. Separate plasma from cells ASAP or within 1 hour of collection. Transfer plasma to amber transport tube. | |
| 2 mL | Plasma | EDTA (Lavender) | Frozen | Protect specimen from light during collection, storage, and shipment. Separate plasma from cells ASAP or within 1 hour of collection. Transfer plasma to amber transport tube. |
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 - 5 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
Protect from light during collection, storage and shipment. Hemolyzed samples and frozen whole blood are unacceptable. This test is New York DOH approved.
Clinical Info
This test is useful to monitor porphyria cutanea tarda (PCT) and to confirm diagnosis of suspected variegate porphyria (VP) and erythropoietic protoporphyria (EPP). If testing for an acute porphyria, please consider ordering PBG, Screen (SQUPBG). If testing for a cutaneous porphyria, please consider ordering Porphyrins, Urine (SQUPORFR). If testing for erythropoietic porphyria, please consider ordering Total Erythrocyte Porphyrins (SQPROPOR).