Porphobilinogen Quantitative, 24-h urine
General Information
- Lab Name
- Porphobilinogen Quant, URN
- Lab Code
- UPBG
- Epic Ordering
- Porphobilinogen, 24 hr Urine
- Description
Porphobilinogen is enriched by ion exchange chromatography and detected spectrophotometrically following its reaction with Ehrlich's reagent. The reportable range is 0 to 528 mg/L with imprecision 6.8% CV.
Increased urinary porphobilinogen excretion with a history of suggestive clinical symptoms is consistent with a biochemical diagnosis of acute porphyria, variegate porphyria, or hereditary coproporphyria. Porphyria Foundation Website
- Synonyms
- Porphyria
- Components
-
Code Name PBGINT Interval PBGTV Total Volume PBGPU Porphobilinogen PBGPT Porphobilinogen/24 hr, URN UPBGM Porphobilinogen Quant Method, URN
Interpretation
- Method
Modified Mauzerall-Granick method
- Reference Range
- See individual components
Ordering & Collection
- Specimen Type
- Urine
- Collection
-
24 HOUR URINE collected in dark bottle with 5 g Sodium Bicarbonate
For random urine, see Porphobilinogen Quantitative, Random urine [UPBGR]
- Handling Instructions
Note: If patient @ home, can add 2-3 tsp Baking Soda to container and keep in paper bag to protect from light.
- Quantity
-
requested: 50 mL urine
minimum: 10 mL urine
Processing
- Processing
Mix, measure and record Total Volume. Refrigerate in dark bottle. Note: If this test is ordered along with Urine Porphyrin, see RUPORG.
Performance
- LIS Dept Code
- Chemistry, Harborview (CHH)
- Performing Location(s)
-
HMC Chemistry, Special
206-520-4600325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420
- Frequency
- Tuesday
- Available STAT?
- No
Billing & Coding
- CPT codes
- 84110
- LOINC
- 27382-1
- Interfaced Order Code
- UOW573