ERYTHROCYTE PORPHYRIN, WHOLE BLOOD

Code
000.0000
Name
ERYTHROCYTE PORPHYRIN, WHOLE BLOOD
Category
None
Department
Send-Out
Start Date
Expiration Date
Synonyms
EP, FEP, Free Erythrocyte Porphyrin, Porphyrins, Whole Blood, Protoporphyrin, Free Erythrocyte
CPT Codes
84202
Site
SBMF
Reference Test
44262
ATLAS Test Code

Specimen Information

Type

Lavender, EDTA Whole Blood

Volume

1.0 ml

Transport Info

Protect from light within one hour of collection and during storage and shipment
Refrigerated

Fasting Required?
False
Patient Instructions

Reference Range

0-35 µg/dL

Methodology

Extraction/Fluorometry

Clinical Significance

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.

Back