Porphyrins, quantitative, 24-hour urine-13486
Test info
Porphyrins, quantitative, 24-hour urine
13486
LAB13486
PORPH24UR
Coproporphyrin
Uroporphyrin
Uroporphyrin
- Coproporphyrins I
- Coproporphyrins III
- Heptacarboxylporphyrins
- Hexacarboxylporphyrins
- Pentacarboxylporphyrins
- Uroporphyrins
Evaluate porphyrias, including those involving deficiencies of enzymes which are needed for heme synthesis and chemical porphyrias.
Specimen
Urine, 24 hr
1.5 mL
- Mix 24 hr collection well
- Measure and record total urine volume
- Transfer a 2mL (minimum 1.5mL) aliquot into an Amber screw-cap polypropylene frozen transport tube/vial - 4mL (LabCorp)
- Label with patient name and 2nd ID, source and total volume.
- If amber transport tubes are unavailable, cover transport tube completely, top and bottom, with aluminum foil. Identify specimen with patient's name directly on the amber transport tube AND on the outside of the aluminum foil and secure with tape.
- Total volume
Protect from light
Refrigerated (preferred) - 7 days
Frozen - 14 days
Ambient - NO
- Stored specimen not refrigerated
- Specimen exposed to light
- Acid preservative
- pH <3
Performance
LabCorp Burlington (003194): R-LC
Mo - Fr
8 days
High-pressure liquid chromatography (HPLC) with fluorometric detection
Clinical and Interpretive info
| Coproporphyrin (CP) I: | 0−24 μg/24 hrs |
| Coproporphyrin (CP) III: | 0−74 μg/24 hrs |
| Heptacarboxylporphyrins (7-CP): | 0−4 μg/24 hrs |
| Hexacarboxylporphyrins (6-CP): | 0−1 μg/24 hrs |
| Pentacarboxylporphyrins (5-CP): | 0−4 μg/24 hrs |
| Uroporphyrins (UP): | 0−24 μg/24 hrs |
Billing
84120
Result 11228-4
Tracking
04/11/2019
09/08/2022
12/22/1923