CPT Code(s):
83718
Specimen Requirements:
Type: Peripheral blood
Container/Tube:
- Serum, gel
- Plasma, gel
Preparation: 12 – 14 hour fasting
Stability (collection to time of analysis/testing):
- Ambient: 14 hours
- Refrigerated: 1 week
- Frozen: 3 months
Specimen Retention Time: 5 days
Methodology:
Direct measure, immunoinhibition
Reported:
Within 24 hours
Reference Values:
Adults: 23 – 92 mg/dL