Laboratory Test Information Guide

Details for Porphyrins-Quantitation, Whole Blood

Test Name: Porphyrins-Quantitation, Whole Blood
Alternate Name(s): Free Protoporphyrin
Protoporphyrin - Free
Laboratory: Core
Specimen Type: 2 x 5 mL Lavender top Vacutainer tubes
Collection Information: A minimum volume of 7 mL of whole blood is required for testing.
Protect specimen from light.
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.
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
12 days
Reference Range: 0.40 - 1.00 µmol/L Erc.
Effective Date: 2010-09-28
Revised Date:  
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: Referred out Monday - Thursday
Method of Analysis: HPLC
Critical Information Required: Hematocrit result must be sent to HICL with sample.
Storage & Shipment: Do not freeze. Send specimen on ice pack (keep cold).
System Codes: 
GENX-then specify test name
Referred To: Hospitals In-Common Laboratory Inc.

Questions? Comments? Contact Laura Gopaul