Lab Test

Porphobilinogen<sub>B</sub> Deaminase, Erythrocytes

Uroporphyrinogen synthase, Porphobilinogen (PBG) Deaminase, Erythrocytes , MAYO: PBGD, EPIC: LAB6637, SOFT: XPBG

Instructions

  • Patient should abstain from alcohol for 24 hours prior to specimen collection.
  • Include a list of medications the patient is currently taking with the specimen.

Specimen Collection Criteria

Collect (preferred specimen): One Green-top Sodium Heparin tube.
Also acceptable: One Green-top Lithium Heparin or Lavender-top EDTA tube.

Refrigerate specimen or place on wet ice immediately after collection and prior to transport.

Physician Office/Drawsite Specimen Preparation

Do not centrifuge or freeze. Refrigerate (2-8°C or 36-46°F) whole blood immediately after collection and prior to transport.

Preparation for Courier Transport

Transport: 3.0 mL whole blood, refrigerated (2-8°C or 36-46°F). (Min: 3.0 mL)

Rejection Criteria

  • Hemolyzed specimens.
  • Specimens not collected and processed as indicated.

Performed

Monday, Wednesday, Friday.
Results available in 3-5 days.

Reference Range

By report.

Test Methodology

Enzymatic End-Point/Spectrofluorometric.

Interpretation

By report.

Clinical Utility

Confirmation of porphobilinogen deaminase deficiency porphyria or acute intermittent porphyria.

CPT Code

82657.

Test Codes

MAYO: PBGD, EPIC: LAB6637, SOFT: XPBG

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.