Casandra
Casandra Test Code QD32287Version 1 (DRAFT)
Performing Lab
Porphyrins, Total, Plasma
Clinical Use
Order TestUse
To diagnose patients with chronic renal failure who may be suspected of primary or secondary porphyria.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Other
Biomarkers
Porphyrins, Total
AnalytePorphyrins, Total • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
6-11 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Plasma
Volume
2 mL
Minimum Volume
0.6 mL
Collection Instructions
2 mL plasma collected in a sodium heparin (green‑top) tube - protect from light. Other acceptable specimens: plasma in EDTA (lavender‑top); serum in red‑top (no gel); collect blood sample with foil‑wrapped tube. Separate plasma or serum by centrifugation; avoid hemolysis; remove to light‑protected tube; freeze immediately; ship frozen on dry ice.
Causes for Rejection
Not protected from light; hemolysis; serum separator tube (SST)
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 8 hours |
| Frozen | 90 days |