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HelpTest ID BLOD1174 Porphyrins, Total, Plasma
Useful For
Monitoring treatment of patients with porphyria cutanea tarda
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.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Specimen Minimum Volume
Plasma: 1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Plasma | Frozen (preferred) | 14 days | LIGHT PROTECTED |
| Refrigerated | 14 days | LIGHT PROTECTED |
Day(s) Performed
Monday through Friday
Report Available
2 to 4 daysMethod Name
PTP: Extraction and Scanning Spectrofluorometry
PFP: High-Performance Liquid Chromatography (HPLC)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84311-Porphyrins, total
82542-Porphyrins, fractionation (if appropriate)
Reporting Name
Porphyrins, Total, PReference Values
≤1.0 mcg/dL
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.Forms
If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.
Special Instructions
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:
SANFORD LABORATORY INTERFACE BUILD INFORMATION
| Result Code | Result Code Description |
|---|---|
| 17888 | Porphyrins, Total, P |
| 17889 | Reviewed By |
| 17890 | Interpretation |