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Test Name:Porphyrins evaluation, whole blood
Test Number:994
Collect:Sodium (Na) heparin whole blood – dk green
Full tube on ice
Minimum Volume:3 mL
Alternate Collect:Lithium (Li) heparin whole blood – dk green
Full tube on ice
Container:Dk green (Na or Li heparin) top tube
Processing:Do not spin
Transport/Stability:Refrigerated - 7 days
Alternate Names:Erythrocyte Porphyrin
Erythropoietic Protoporphyria (EPP)
Free Erythrocyte Porphyrin (FEP)
Protoporphyrin
Protoporphyrins, Total, Erythrocytes
RBC Porphyrins
Red Blood Cell Porphyrins
X-linked Dominant Protoporphyria (XLDPP or XDP)

MSO
LAB994
Performing Lab:Mayo Clinic Laboratories (PEE); R-NX
Days Set Up:Mo, We, Fr; 10:30 a.m.
Expected TAT:3 - 4 days
Ref. Ranges:Porphyrins, total, RBC: <80µg/dL packed cells
Free Protoporphyrin: <20 µg/dL packed cells
Zinc-Complexed Protoporphyrin: <60 mcg/dL packed cells
Collection/
Processing Details:
Useful for:
Establishing a biochemical diagnosis of erythropoietic protoporphyria and X-linked dominant protoporphyria


Patient preparation
Patient should abstain from alcohol for 24 hours.

Immediately following collection, place the specimen on wet ice.

If the total erythrocyte porphyrin value is ≥80 µg/dL, the protoporphyrin fractionation (PPFE) assay will be automatically performed at an additional charge. The PPFE test results include free protoporphyrin and zinc-complexed protoporphyrin.
Method:Spectrofluorometric
CPT Codes:84311 - Spectrophotometry, analyte not elsewhere specified
82542 - Chromatography (if appropriate)
Date Created:06/05/2019
Revised Date:08/30/2019