PORPHOBILINOGEN, URINE, QUANTITATIVE

Test Documentation
Specimen Required
Collect 24 hour urine in an IATA-approved sterile screw-capped plastic container, protected from light. Keep refrigerated during collection. Adjust to pH 6-7 using sodium carbonate (5g Na2CO3). Send a 10 mL urine aliquot (2 mL minimum) refrigerated in a screw-capped plastic container. PROTECT FROM LIGHT.

Alternate Specimen
10 mL random urine (2.0 mL minimum), send frozen in an IATA-approved sterile screw-capped plastic container. PROTECT FROM LIGHT. Do NOT use preservative.

Rejection Criteria
Received room temperature, not protected from light

Methodology
Colorimetric

Stability
Room Temperature: Unacceptable; Refrigerated: 7 days; Frozen: 1 month

Reference Range
Random:
By report
24 hour
<2.4 mg/24 hr
Creatinine:   By report  

Performed
Monday-Friday

Turnaround Time3-7 days
Test CodeUPBGQ, UPBGR
CPT-4 Code (s)
84110
LOINC Codes
Porphobilinogen 24 h   2810-0  
Total volume   3167-4  
Interpretation   Not available  

Warde
Medical
Laboratory