Lab Test : T3 Total (Triiodothyronine)

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Alternate:N/A
Includes:T3
Department:Chemistry
Phone:(937) 641-3428
SQ Code:T3T
Available:Mon - Fri, first shift only
Turnaround:24 hours
Specimen:Blood
Volume:0.7 mL
Container:4 mL red top tube
Temperature:N/A
Rejection:Grossly hemolyzed specimens
Normal:1 - 30 days: 20 - 215 ng/dL
1 - 11 months: 85 - 250 ng/dL
1 - 10 years: 119 - 218 ng/dL
> 11 years: 55 - 170 ng/dL
Uses:T3 concentration is more sensitive to certain thyroid conditions than T4,and T3 levels change faster and more markedly than T4. T3 levels is also an excellent indicator of the ability of the thyroid to respond to both stimulatory and suppressive tests. T3 levels better define hyperthyroidism.
Limitations:Pregnancy, excess estrogens, androgens anabolic steroids, and glucocorticoids may cause false thyroid values.
Method:Competitive chemiluminescence immunoassay
 

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