Precoproporphyrin Peak I; urine

CPT Code

84120

Specimen Requirements

10 mL - from 1^st morning void or 24-hour urine collection

Collection Container/Tube

Collect urine in supplied plastic specimen collection cup. 24-hour urine collections are poured into larger amber container.

Transport Container/Tube

15 mL amber plastic specimen vial containing preservative (25mg Sodium Carbonate)

Minimum Specimen Volume

3 mL

Rejection Criteria

Sample not protected from light
Sample acidified - pH <5.0

Stability Information

Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days
37°C/99°F: Not determined

Methodology

HPLC

Turnaround Time

3 - 5 days

Reference Intervals