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HelpTest Code PTP Porphyrins, Total, Plasma
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| PFP | Porphyrins, Fractionation, P | No | No |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
PlasmaShipping Instructions
Ship specimen in amber vial to protect from light.
Necessary Information
Include a list of medications the patient is currently taking.
Specimen Required
Patient Preparation: Patient must not consume any alcohol for 24 hours before specimen collection.
Supplies: Amber Frosted Tube, 5 mL (T915)
Collection Container/Tube:
Preferred: Green top (sodium or lithium heparin)
Acceptable: Lavender top (EDTA)
Submission Container/Tube: Amber vial
Specimen Volume: 3 mL
Collection Instructions:
1. Centrifuge specimen and aliquot plasma into amber vial.
2. Send plasma frozen.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma | Frozen | 14 days | LIGHT PROTECTED |
Reference Values
≤1.0 mcg/dL
Day(s) Performed
Monday through Friday
CPT Code Information
84311-Porphyrins, total
82542-Porphyrins, fractionation (if appropriate)
Genetics Test Information
Plasma specimens from patients with active porphyria cutanea tarda, congenital erythropoietic porphyria, and erythropoietic protoporphyria may exhibit increased plasma porphyrin levels. However, a definitive diagnosis cannot be made by plasma analysis alone.
Report Available
2 to 4 daysSpecimen Retention Time
14 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |