PORPHOBILINOGEN, URINE

Code
900.3695
Name
PORPHOBILINOGEN, URINE
Category
None
Department
Send-Out
Start Date
Expiration Date
Synonyms
PBG, Porphyria, Watson-Schwartz test
CPT Codes
84110
Site
SBMF
Reference Test
44173
ATLAS Test Code

Specimen Information

Type

Urine, 24-hour OR Random

Volume

8.0 ml

Transport Info

Specimen must be in a light-protected (amber) tube or foil
Frozen

Fasting Required?
False
Patient Instructions

Collect specimen in a light-protected (amber) plastic container with tightly fitting lid (no preservative)
To begin collection of timed specimen, have patient urinate, noting date and exact time
Discard this first portion of urine, but document date and time of voiding on container label and test requisition as "start" of timed specimen
Save all urine voided during designated time period, including portion voided at exact end of time period
IMPORTANT: Refrigerate entire specimen (2-8°C) during and after collection to prevent bacterial growth
Document date and time of final voiding on label and requisition as "end" of timed specimen

Reference Range

See Report

Methodology

Quantitative Ion Exchange Chromatography
Quantitative Spectrophotometry

Clinical Significance

Appropriate test to rule out acute intermittent porphyria (AIP) and other acute attack types of porphyrias associated with neurologic and/or psychiatric symptoms.

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