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HelpTest Code PBGU Porphobilinogen, Quantitative, Random, 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 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.
CMH COLLECTION: 15mL urine in a sterile cup, protected from light
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 |
Testing Algorithm
For more information see:
-The Heme Biosynthetic Pathway
Useful For
First-order test for evaluating a suspected acute porphyria: acute intermittent porphyria, hereditary coproporphyria, and variegate porphyria
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Day(s) Performed
Monday through Friday
Report Available
2 to 4 daysReporting Name
Porphobilinogen, QN, Random, UReference Values
≤0.2 mmol/mol creatinine
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84110