Free T3

Additional Information:

EPIC Test Name: T3 FREE

Decimal Point Number: 1 decimal point e.g. 1.8 pg/mL

CPT Code(s):


Collection Procedure:

Collect specimen in SST tube. Allow to clot. Centrifuge and store refrigerated. Transport to lab.

Specimen Requirements:

Type: Serum
Container/Tube: SST
Sample Volume: 1 mL
Minimum Volume: 0.2 mL (Repeat testing is not possible with this specimen volume.)
Storage: Refrigerate
Stability (collection to time of analysis/testing):

  • Refrigerated: 2 days
  • Frozen: 2 months


Competitive analog-based immunoassay


1-3 Business Days

Reference Values:

Reference Range: 1.8 – 4.2 pg/mL