Testing Details
Fasting Required: NO
Preferred Specimen: Serum
Reference Range(s):
| 0-3 Days (infants) | ||
| Premature (31-35 Weeks) | ≤15.0 | µg/dL |
| Term | ≤14.0 | µg/dL |
| 4 Days-11 Months | Not established | |
| ≥1 Year 4 p.m. (3-5 p.m.) specimen | 3.0-17.0 | µg/dL |
Turnaround Time:
Test Prep: Must be taken at any Quest PSC Between 3PM and 5PM
Limitations: Assay is not recommended when patient is receiving prednisone/prednisolone therapy due to cross reactivity with the antibody used in this assay
Turnaround Time: 5 Days
Test Code: 4213
