Porphobilinogen Timed Urine PORB

Synonyms

Allscripts (AEHR) Order Name

Porphobilinogen, Urine Quantitative

Sunrise Clinical Manager (SCM) Order Name

Porphobilinogen, Urine Quantitative

EPIC Order Name

24 Hour Urine, Porphobilinogen (PBG), Quantitative

Clinical Info

Porphobilinogen levels in the urine should be measured during acute
attacks of abdominal pain, extremity pain or paresthesias, tachycardia,
nausea and vomiting, neurologic abnormalities, and to investigate
characterized by urinary excretion of porphobilinogen and δ-aminolevulinic
acid during acute attacks. Increased urinary excretion of porphobilinogen may be caused
also by acute attacks of variegate porphyria or of hereditary coproporphyria,
and also in lead poisoning (rarely). In lead poisoning, urinary δ-aminolevulinic
acid measurement is more useful.

Specimen Type

Urine

Container

24hr Ur No Light

Collection Instructions

Container/Tube: 24-hr Urine container
Specimen: 3 mL 24 urine (1 mL min) No preservative- Protect from light
Transport Temperature: Frozen
Stability: Refrigerated: 1 days
Frozen: 30 days
Collection: Instruct the patient to void at 8 AM (or 8 PM) and
discard the specimen. Then collect all the urine, including the
final specimen voided at the end of the 24-hour collection period
(ie, 8 AM [or 8 PM] the following day), in the 24-hour collection
container.
Specimen must be kept refrigerated during collection.

Transport Instructions

Frozen

Specimen Stability

Refrigerated: 1 days
Frozen: 30 days

Methodology

Ion-exchange chromatography/spectrophotometry

Days Performed

TAT; 4 - 6 Days

Performing Laboratory

LabCorp

CPT

84110 - porphobilinogen
 
LOINC Code: 2810-0

PDM

5901493

Result Interpretation

0.0−1.5 mg/24 hours
 
 
This test was developed, and its performance characteristics

determined, by LabCorp. It has not been cleared or approved

by the Food and Drug Administration.

Forms

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