ERYTHROCYTE PORPHYRIN, WHOLE BLOOD
- ERYTHROCYTE PORPHYRIN, WHOLE BLOOD
- Start Date
- Expiration Date
- EP, FEP, Free Erythrocyte Porphyrin, Porphyrins, Whole Blood, Protoporphyrin, Free Erythrocyte
- CPT Codes
- Reference Test
Lavender, EDTA Whole Blood
- Transport Info
Protect from light within one hour of collection and during storage and shipment
- Fasting Required?
- Patient Instructions
- Reference Range
Elevated EP results are seen in early and late iron deficiency, in the anemia of chronic disease, and in chronic lead poisoning (typically when blood lead is greater than 25 µg/dL). Elevated protoporphyrin (as in erythropoietic protoporphyria) and zinc coproporphyrin (usually associated with childbirth) can increase the apparent EP signal. A more specific test for free protoporphyrin is Porphyrins, Total, Serum (44077). Specimens which are hemolyzed, clotted, or improperly aliquoted may show false elevations.