Erythrocyte porphyrin (EP), whole blood

Alphabetical Test listing

Erythrocyte porphyrin (EP), whole blood-994

Test name:

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Free erythrocyte porphyrin
Porphyrins (FEP)
Protoporphyrin, free erythrocyte (FEP)
Protoporphyrins, total, erythrocytes
RBC Porphyrins
Red blood cell porphyrins

Useful for:

Screen for erythropoietic protoporphyria (EPP) in patients with cutaneous photosensitivity.

Specimen type:

EDTA whole blood, metal free

Collection container:

Navy blue metal free vial/tube with EDTA

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediatley following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting

Processing instructions:

Protect from light during collection, storage, and shipment.
Transfer whole blood to an Amber transfer vial/tube - 12 mL (LabCorp)

Transport container:

Amber transfer vial/tube - 12 mL (LabCorp)

Alternate collection container:

Lavender (EDTA), 4mL

Transport and stability:

Refrigerated – 2 weeks (preferred)

Frozen – 1 month

Ambient – NO

Reason for rejection:

Specimens not collected in EDTA
Clotted specimens

Performing lab:

ARUP (0020610) via Labcorp (009985): R-NX

Days set up:

Mo, We, Sa

TAT:

4 days

Method:

Fluorometry

Reference ranges:

0 - 35 µg/dL

CPT codes:

84202

Date created:

07/21/2021

Revised date:

07/26/2021

Review date:

12/15/2023