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HelpOrderable Name PBGU Porphobilinogen, Quantitative, Random, Urine
Useful For
First-order test for evaluating a suspected acute porphyria: acute intermittent porphyria, hereditary coproporphyria, and variegate porphyria
Testing Algorithm
For more information see:
-The Heme Biosynthetic Pathway
Specimen Type
UrineShipping 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
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Frozen (preferred) | 7 days | LIGHT PROTECTED |
| Refrigerated | 7 days | LIGHT PROTECTED |
Special Instructions
Reference Values
≤1.3 mcmol/L
Day(s) Performed
Monday through Friday
CPT Code Information
84110
Report Available
2 to 4 daysReject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Forms
If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.