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Test Code FT3 T3, Free

Specimen Type

Blood

Preferred Collection Container

GRN-PST

Acceptable Collection Container

Red top tube, SST tube

Collection Instructions

Collect specimen in red top or SST tube. Centrifuge, aliquot serum into plastic vial, and refrigerate.

Collection Volume

3 mL

Minimum Collection Volume

1 mL

Testing Volume

0.4 mL (400 ul)

Rejection Criteria

Gross hemolysis

Specimen Storage and Stability

Stable up to 48 hours at 2-8 C

Day(s) and Time(s) Performed

Monday through Sunday, 24 hours

EPIC Code

LAB137

Turn Around Time

24 hours

Lab Department

Chemistry

Alias

T3, Free; Free T3; Free Triiodothyronine

Ordering Info

Significant interference from biotin can be observed with this assay. It is recommended that patients refrain from taking any supplements containing biotin for 24 hours before having this test drawn.