Esoterix
Expected Turnaround Time
3 - 9 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Specimen Requirements
Specimen
Serum or EDTA plasma
Volume
1 mL
Minimum Volume
0.3 mL (Note: This volume does not allow for repeat testing.)
Container
Serum: Tiger-top (SST) tube Plasma: Lavender-top (EDTA) tube
Collection
Separate serum within 45 minutes of venipuncture; transfer into a plastic transport tube.
Storage Instructions
Ship frozen on dry ice.
Test Details
Methodology
High-pressure liquid chromatography/tandem mass spectrometry (HPLC/MS-MS)
Reference Interval
Age Range (ng/dL) Premature (26 - 31w) 33 - 147 Premature (32 - 35w) 49 - 217 Full-term (2 - 7d) 33 - 206 8d - 5m 13 - 107 6 - 12m 8.1 - 52.8 1 - 15y 8.3 - 22.9 >=16y 9.2 - 24.1