PORPHYRINS, QUANTITATIVE, FECAL

Components
Includes Coproporphyrin and Protoporphyrin.

Specimen Required
Collect random stool specimen. Send 5.0 g (1.0 g minimum) frozen in a screw-capped plastic container. PROTECT FROM LIGHT. CRITICAL FROZEN.

Rejection Criteria
Liquid stool, timed collections

Methodology
Quantitative High Performance Liquid Chromatography

Stability
Room Temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 3 weeks

Reference Range
Coproporphyrin: 0-45 nmol/g dry weight
Protoporphyrin: 0-100 nmol/g dry weight

Performed
Tuesday, Friday

Turnaround Time8-10 days
Test CodeZFPOR
CPT-4 Code (s)
84126
LOINC Codes
Porphyrin, Fecal Interpretation   14884-1  
Protoporphyrin, Feces   29267-2  
Coproporphyrin, Feces   29266-4  

Warde
Medical
Laboratory