Test ID: FQPPS    
Porphyrins, Feces

The following algorithms are available in Special Instructions:

-Porphyria (Acute) Testing Algorithm

-Porphyria (Cutaneous) Testing Algorithm

Container/Tube: Stool container (T291)

Specimen Volume: Entire collection (48, 72, or 96 hour). 24-Hour collection is adequate if the collection volume is approximately 100 g.

Collection Instructions:

1. Patient should be instructed to refrain from red meat and aspirin-containing medications for 3 days prior to, as well as during, specimen collection. Compliance should be indicated.

2. No barium, laxatives, or enemas may be used within 24 hours of starting the collection.

Additional Information:

1. Length of collection period is required.

2. Specimens smaller than 100 g may not provide interpretable results.

3. Include a list of medications the patient is currently taking.

• The Heme Biosynthetic Pathway
• Porphyria (Acute) Testing Algorithm
• Porphyria (Cutaneous) Testing Algorithm

If not ordering electronically, complete, print, and send an Inborn Errors of Metabolism Test Request (T798) with the specimen.