Test Details
Mnemonic
UPORA
Ordering Code
3687300
CPT-4 Code(s)
84120
Specimen Information
Collect
24 hour urine, refrigerate and protect from light during collection
Specimen Preparation
Mix well and send 4.0 mL urine in an amber screw capped plastic vial. PROTECT FROM LIGHT. Record 24 hour urine volume on test requisition and specimen label.
Alternate Specimen
Random urine, PROTECT FROM LIGHT
Minimum Volume
2.0 mL
Transport Temperature
Frozen
Rejection Criteria
Body fluids other than urine
Stability
Room temperature: Unacceptable
Refrigerated: 4 days
Frozen: 30 days
Refrigerated: 4 days
Frozen: 30 days
Methodology
Quantitative High Performance Liquid Chromatography
Reference Range
Uroporphyrin: 0 - 4 µmol/mol CRT
Heptacarboxylate Porphyrin: 0 - 2 µmol/mol CRT
Coproporphyrin I: 0 - 6 µmol/mol crt
Coproporphyrin III: 0 - 14 µmol/mol crt
Creatinine: See report
Heptacarboxylate Porphyrin: 0 - 2 µmol/mol CRT
Coproporphyrin I: 0 - 6 µmol/mol crt
Coproporphyrin III: 0 - 14 µmol/mol crt
Creatinine: See report
Performing Laboratory
ARUP Reference Laboratory
New York DOH Approval Status
Yes