Methodology
Fluorometry
Synonyms
FEP; Free Erythrocyte Porphryin; Porphyrins (FEP); Protoporphyrin, Free Erythrocyte (FEP); Protoporphyrins, Total, Erythrocytes; RBC Porphyrins; Red Blood Cell Porphyrins
Specimen Type
Whole Blood
Performing Lab
ARUP
Epic ID
Other Reference Test
Lab Test Days
Monday, Wednesday, Friday
Standard TAT
1-4 Days
Collection Information
Specimen Required
0.5-1 mL Whole Blood
Container Type
Lavender (EDTA)
Collection Instructions
Whole blood collected in an EDTA (Royal Blue-Top) or EDTA (tan-top) are also acceptable. PROTECT FROM LIGHT.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK
Specimen Stability
Room Temp: Unacceptable; Refrigerated: 2 Weeks (Preferred); Frozen: 1 Month
Rejection Criteria
Clotted
Test Volume Required
1 mL Whole Blood
Minimum Test Volume
0.5 mL Whole Blood
Processing Instructions
PROTECT FROM LIGHT. Complete an ARUP requisition and submit with specimen refrigerated. Call Apollo Courier Service for pick-up daily.
Comments
Specimen should be tested for lead FIRST to avoid potential contamination problems. Specimens not protected from light acceptable with a disclaimer (need physician approval).
CPT Codes
84202
Revised
09-30-22
Initials
SA