Total T3

Test Code: TD_CH178

CPT Code(s): 84480

$20

Test Details

Alternative Name(s)

Triiodothyronine, total

Test Includes

T3 Total

Methodology

Abbott Alinity chemiluminescent microparticle immunoassay (CMIA)

Rejection Criteria

Gross Hemolysis

Reference Range(s)

0.8-2 ng/mL

Specimen Requirements

Preferred Specimen

Serum Separator Tube

Minimum Volume

0.5 mL serum

Sample Stability

8 days room temperature
2 weeks refrigerated
1 year frozen. Allow only one freeze/thaw cycle

Transport Temperature

Refrigerated

Collection Instructions

Allow sample to clot in an upright position for
at least 30 minutes, then centrifuge sample. Refrigerate.

Alternative Specimen

0.5 mL serum from a plain red top tube. Allow specimen to clot completely for 20 to 30 minutes prior to centrifugation. Centrifuge at 1,600 RCF for 10 minutes. Using a transfer pipette remove the serum and transfer to a transfer tube and clearly label as serum from a plain red top tube