Total Triiodothyronine (T3) Test

1,100 Kshs | Home Collection Available

Synonyms

T3 Test, Total triiodothyronine

Purpose

Total Triiodothyronine (T3) Test is a blood test that measure the amount of triiodothyronine in the blood.

Patient Preparation

The patient should avoid taking biotin supplements at least 72 to sample collection.

Samples

1ml with a minimum volume of 0.7ml of serum or plasma collected in a Gel-barrier, red-top or green top tube (lithium heparin). Avoid using EDTA, oxalate or citrate plasma. Transfer separated serum to a plastic transport tube if a red top tube is used. Store sample at room temperature.

Reference Range

>10years:71-180ng/dL

Results Turnaround

Within 24 hours of receipt of samples.

Diseases / Diagnostic indicators

Increased levels of T3 occurs in hyperthyroidism and toxicosis. T3 is decreased with nonthyroidal chronic diseases.