Porphyrins, 24 hour stool

Alphabetical Test listing

Porphyrins, 24 hour stool-994

  
Porphyrins, 24 hour stool
  
994
  
LAB994
  
MSO
  

Evaluation of patients who present with signs or symptoms suggestive of porphyria cutanea tarda, hereditary coproporphyria, variegate porphyria, congenital erythropoietic porphyria, erythropoietic protoporphyria, or X-linked dominant protoporphyria.

  

 Specimens smaller than 100 g may not provide interpretable results

  
  • Patient should be instructed to refrain from red meat and aspirin-containing medications for 3 days prior to, as well as during, specimen collection.
  • No barium, laxatives, or enemas may be used within 24 hours of starting the collection.
  
Stool, timed collection (48, 72 or 96 hr)
  
  
100 g
  
10 g
  
  • Use as many containers as necessary
  • Label all containers X of X (eg. 1 of 2, 2 of 2)
  

Freeze

Submit all containers

  

Mayo stool collection jar

  
  • Length of collection period is required
  • Include a list of medications the patient is currently taking
  • Indicate patient compliance of diet/medications recommendations listed in patient preparation
  

Frozen (preferred) - 14 days

Refrigerated - 14 days

  
Mayo Clinic Laboratories (FQPPS): R-MM
  
We
  
7 - 11 days
  

High-Performance Liquid Chromatography (HPLC)

  

See report

  
84126
  
11/30/2001
  
10/16/2018
  
05/01/2020