Home
HelpTest ID PTP Porphyrins, Total, Plasma
Useful For
Monitoring treatment of patients with porphyria cutanea tarda
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| PFP | Porphyrins, Fractionation, P | No | No |
Testing Algorithm
If total porphyrins are above 1.0 mcg/dL, then porphyrin fractionation will be performed at an additional charge.
The following algorithms are available:
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 plasma
Collection Instructions: Centrifuge specimen and aliquot plasma into amber vial.
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma | Frozen (preferred) | 14 days | LIGHT PROTECTED |
| Refrigerated | 14 days | LIGHT PROTECTED |
Special Instructions
Reference Values
≤1.0 mcg/dL
Day(s) Performed
Monday through Friday
CPT Code Information
84311-Porphyrins, total
82542-Porphyrins, fractionation (if appropriate)
Report Available
2 to 4 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Forms
If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.