Lab Test

Porphyrins, Stool

Porphyrins, 24-Hour, Feces , MAYO: FQPPS, EPIC: LAB6132, SOFT: XPORF

Instructions

  • Specimen collection containers can be obtained from Beaumont Laboratory at 1-800-551-0488.
  • 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.

Specimen Collection Criteria

Collect (preferred specimen): 48 hour, 72 hour, or 96 hour stool specimen in the appropriate containers obtained from the Laboratory.
Also acceptable: 24 hour stool specimen in the appropriate containers obtained from the Laboratory, if the collection volume is approximately 100 grams. If a 24 hour collection does not weigh 100 grams, continue collection until 100 grams are obtained.

  • Specimen must be refrigerated or frozen during and after collection.
  • Note the length of collection on the specimen.

Physician Office/Drawsite Specimen Preparation

Note the length of collection on the specimen. Freeze (-20°C/-4°F or below) the entire specimen prior to transport.

Preparation for Courier Transport

Transport: Entire stool collection, frozen (-20°C/-4°F or below). (Min: 10 g)

Rejection Criteria

  • Specimens less than 10 grams.
  • Specimens not collected and processed as indicated.

Performed

Monday - Friday.
Results available in 5-6 days.

Reference Range

By report.

Test Methodology

High Pressure Liquid Chromatography (HPLC). Porphyrins are quantitated by fluorescence.

Interpretation

This assay includes coproporphyrins, protoporphyrins, and uroporphyrins.

CPT Code

84126.

Test Codes

MAYO: FQPPS, EPIC: LAB6132, SOFT: XPORF

Last Updated

7/11/2019

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This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.