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Porphyrins, Fractionated, Quantitative, Random Urine
Test CodePORR
CPT Codes
<p>84120</p>
Preferred Specimen
Specimen
Type: Preserved urine
Collection
Container/Type
Preferred: Random urine, sterile container, 5
grams sodium carbonate (Na2CO3)
Acceptable: Unpreserved random urine;
unpreserved catheterized or first void clean catch; random clean
catch
Submission
Container/Tube: Plastic vial, protected
from light
Specimen
Volume: 2 mL
Collection
Instructions:
- Collect urine with 5
grams of sodium carbonate. - Refrigerate and
protect from light during collection.
Additional
Information:
- Collection with no
preservative is acceptable, if properly refrigerated and light
protected.
Minimum Volume
1.5 mL
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Samples not protected from
light • Samples with a pH <4.0
Methodology
High Performance Liquid Chromatography (HPLC)
Setup Schedule
Sunday, Tuesday - Friday
Report Available
5-7 days
Last Updated: February 16, 2023