The Total T3 test measures the bound(T3) and free forms of T3(FreeT3) levels in the blood to evaluate the thyroid functioning if it has underactive(Hypothyroidism) or overactive(Hyperthyroidism) performance.

SPECIMEN: 2 mL (1 mL min.) serum from 1 SST. Ship refrigerated or frozen.
STABILITY: Room: 2 hrs; Refrigerated: 1 week; Frozen: 4 weeks
REPORT: Daily
INSTRUCTIONS: No special preparation required
USAGE: This assay is a useful test for Hyperthyroidism in patients with low TSH and normal T4 levels. It is also used for the diagnosis of T3 toxicosis. It is not a reliable marker for Hypothyroidism. This test is not recommended for general screening of the population without a clinical suspicion of hyperthyroidism.