Important Note

ASANTE ORDER CODE IS FT4E

EPIC/BEAKER CODE IS LAB6970

ESOTERIX Test Code-501902

Procedure-Thyroxine, Free by Dialysis and Mass Spectrometry

CPT Code-84439

Specimen Requirement
1 mL serum, red top or EDTA plasma. Separate within 1 hour. Store and
ship frozen or refrigerated in plastic vial.
Pediatric Minimum
0.4 mL Serum. Please note: This volume does not permit repeat
analysis.
Methodology Performing Location
Direct dialysis and HPLC Tandem Mass Spectrometry Endocrine Sciences
Assay Schedule Result Turnaround Time
M-F 4 - 6 days