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Catalog ID PBGU Porphobilinogen, Quantitative, Random, Urine

Important Note

CPOE TEST NAME:  Ref Misc Referral Lab Test

Test Name REF:  PBG 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


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 before specimen 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. If pH is below 5.0, specimen will be rejected.

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


WMCG Laboratory Test Catalog Note:

Submit 3 full plain urine tubes to the Core laboratory.

Reference Values

≤0.2 mmol/mol creatinine

Specimen Stability Information

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

Day(s) Performed

Monday through Friday

Specimen Type

Urine

Specimen Minimum Volume

15 mL

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.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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

Reject Due To

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

Method Name

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

Report Available

2 to 4 days