Laboratory Test Information Guide

Details for Porphyrins, Serum/Plasma

Test Name: Porphyrins, Serum/Plasma
Alternate Name(s): Free Protoporphyrin
Protoporphyrin - Free
Laboratory: Core
Specimen Type: 5 mL Gold top or 6 mL Red top Vacutainer tube
or
6 mL Green (Sodium Heparin) top or 4 mL Lavender top Vacutainer tube

Avoid gel-separator tubes
Collection Information: A minimum volume of 0.4 mL of serum or plasma is required for testing.
Collect in foil-covered tube to protect from light. Avoid hemolysis.
Specimen must be labelled inside and outside light-protecting wrap.
Do not freeze.
Note: Hematocrit must be provided to HICL to allow calculation of result.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Referred out Monday-Thursday
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
12 days
Stat
N/A
 
Reference Range: 0.40 - 1.00 µmol/L Erc.
Effective Date: 2010-09-28
Revised Date: 2020-06-22
Critical Value:  
Interpretive Comments: Porphyrin reference values are not available for individuals 17 years of age and younger.
Special Processing: Protect specimen from light.
Comments:  
Method of Analysis: HPLC
Critical Information Required: Hematocrit result must be sent to HICL with sample.
Storage & Shipment: Separate plasma by centrifugation. Remove plasma to a light-protected tube. Freeze immediately after separation. Store and send frozen.
System Codes: 
Cerner
GENX-then specify test name
 
Referred To: In-Common Laboratories

Questions? Comments? Contact Laura Gopaul