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Free Thyroxine Index

eDH Procedure Code(s)

LAB3465 Free Thyroxine Index —LAB ONLY

Specimen Information

Specimen Type Specimen Source Acceptable Containers Minimum Test Volume (mL)
Blood Blood, Venous GrnLH-R 0.1
Blood Blood, Venous GrnLHM-R 0.1

Shipping and Handling

Processing Instructions: N/A

Transport Temperature: Refrigerated
Transport Instructions: N/A

Specimen Stability Unprocessed
Unprocessed: 8 Hours
Specimen Stability Post Processing
Ambient: 4 Days
Refrigerate: 8 Days
Frozen: 12 Months

Test Components

Component LOINC Code
FREE THYROXINE INDEX 3028-8
T UPTAKE 3028-8
T4 TOTAL 3026-2

Turnaround Time (TAT)

STAT 1 Hour
Routine 4 Hours

CPT Code(s)

LAB3465 Free Thyroxine Index: 84439

Performing Lab Section

Chemistry

Performing Lab(s)

Dartmouth Hitchcock Medical Center Laboratory (MHMH)