Porphyrins, Feces


Sunquest Code:PORFEC  
Epic Code:LAB6886Epic Name:Porphyrins, Fecal
Methodology:High performance liquid chromatography
CPT Code:84126
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 2-7 days.
Special Instructions:Protect from light during collection, storage and shipment. Freeze specimen and wrap in foil immediately after collection..


Collection Instructions

Specimen:Feces
Optimal Volume:5 grams
Minimum\Peds Volume:1 grams
Container:Plastic leakproof container, sterile, Protect from light (Plastic leakproof container, sterile)
Causes for Rejection:Complete timed collections (24-72 hours). Specimens stored in one gallon cans or other large containers. Liquid stool.


Processing and Shipping

Specimen Processing:Store in freezer. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
Shipping Instructions:Ship on dry ice; protect from light.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:99824


Interpretive

Reference Range:

Coproporphyrin, Feces

0-45 nmol/g dry weight

Protoporphyrin, Feces

0-100 nmol/g dry weight

 

 

Use:Distinguish among acute intermittent porphyria (AIP), variegate prophyria (VP), and hereditary coproporphyria (HCP).


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