Geisinger Medical Laboratories Test Catalog

PORPHOBILINOGEN, QUANTITATIVE, RANDOM URINE
Geisinger Epic Procedure Code: LAB2878 Geisinger Epic ID: 21611
SPECIMEN COLLECTION
Specimen type:	Random urine
Preferred collection container:	Non-sterile specimen container
Specimen required:	2 mL aliquot random urine; minimum 1 mL. Protect aliquot from light.
Special notes:	Protect from light. Collect after first morning void and before early evening.
Patient preparation:	Collect after first morning void and before early evening.
SPECIMEN PROCESSING
Transport temperature:	Refrigerated (preferred) or frozen.
Specimen stability:	Room Temperature: Unacceptable. Refrigerated: 1week, pH6-7. Frozen: 1 month, pH 6-7.
Rejection criteria:	Room temperature specimens unacceptable.
TEST DETAILS
Reference interval:	See laboratory report.
Additional information:	Patients with hereditary forms of porphyria usually will present with profound elevations of this analyte (>5-fold) during acute episodes. Moderate elevations (<3-fold) are more often due to medications or environmental factors.
CPT code(s):	84110
	Note: The billing party has sole responsibility for CPT coding. Any questions regarding coding should be directed to the payer being billed. The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:	None.
Methodology:	Spectrophotometric (Colorimetric)
Synonyms:	RPORP, Quantitative porphobilinogen Quest test code 6329