Biochemistry Test

Thyroid function test

Dr. Simi Paknikar
Medically Reviewed by Dr. Simi Paknikar, MD
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Test : Thyroid function test

Indications : Hyperparathyroidism and hypothyroidism

Physiology : A butterfly like gland with two lobes extending around trachea and produces thyroxine.It exists as total T4,T3,free T4 and TSH.It affects cellular growth and metabolism

Normal Range : T4-60-140nmol/L, T3-1.2-1.8nmol/L, TSH-0.1-6IU/L

Interpretation : Total T4-Increased levels are seen in graves disease,cancer of thyroid as symptoms of hyperthyroidism.low lwvels are seen in hypothyroidism whose symptoms are myoxyedema hashmito disease and pituatry disorders .T 3 -Increased levels are seen in hyperthyroidism and decreased levels are seen in hypothyroidsm.TSH-High in hypothyroidism and low in hyperthyroidism

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