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Pyrroles, Urine
Test Code437X
CPT Codes
84311<br><strong>** This code is not available for California, Florida, Maryland, New York, Pennsylvania, or Rhode Island patient testing. **</strong>
Preferred Specimen
8 mL frozen random urine - See collection instructions
Patient Preparation
If this is an initial test for Pyrroles,discontinue taking any B6 or Zinc one week prior to collection.If retesting, take supplements as usual. Female patients: DO NOT collect specimen during menstrual cycle.
Minimum Volume
2 mL
Instructions
Collect urine in a clean container. Using an amber, plastic tube containing 500 mg of ascorbic acid (vitamin C), fill with urine, no less than 1/2 full and no more than 3/4 full. Mix and freeze. Ship frozen with a cold pack by overnight delivery. Do not thaw.
Transport Temperature
Frozen
Specimen Stability
Room temperature: Frozen only
Refrigerated: Frozen only
Frozen: 30 days
Refrigerated: Frozen only
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Ascorbic acid not used to maintain specimen stability • Samples not protected from light
Methodology
Spectrographic
Setup Schedule
Average TAT is 1 week; Set up is batched