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Test Code PBGU Porphobilinogen, Quantitative, Random, Urine

Reporting Name

Porphobilinogen, QN, Random, U

Useful For

First-order test for evaluating a suspected acute porphyria: acute intermittent porphyria, hereditary coproporphyria, and variegate porphyria

Method Name

Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Urine


Shipping Instructions


Ship specimen protected from light.



Necessary Information


Include a list of medications the patient is currently taking.



Specimen Required


Patient Preparation: Patient must not consume any alcohol for at least 24 hours prior to collection.

Supplies: Urine Container-Amber, 60 mL (T596)

Specimen Volume: 20 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative necessary but pH must be above 5.0.

3. Specimens should be protected from light and frozen immediately following collection.


Specimen Minimum Volume

15 mL

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Frozen (preferred) 7 days LIGHT PROTECTED
  Refrigerated  7 days LIGHT PROTECTED

Reference Values

≤1.3 mcmol/L

Day(s) Performed

Monday through Friday

CPT Code Information

84110

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PBGU Porphobilinogen, QN, Random, U 2811-8

 

Result ID Test Result Name Result LOINC Value
29365 Porphobilinogen, U 2811-8
29366 Interpretation (PBGU) 59462-2
35032 Reviewed By 18771-6

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

Report Available

2 to 4 days