There are five general thyroid function tests. serum total T3, normal range, is usually 1.6-3.0 nmol/L. serum total thyroxine normal value is 65-155 nmol/L. serum free thyroxine normal value is 10.3 to 25.7 pmol/L. serum free T3 normal value is 16.1-11.4 pmol/L. serum anti-T3, normal value is The normal value of thyroid stimulating hormone is 0.4-3.0 mIU/L. Hyperthyroidism can be treated with anti-thyroxine medication, and hypothyroidism can be treated with eugenol. Regularly review your thyroid function and have a thyroid ultrasound.