• Test name
  • FREE THYROXINE (FT4)
  • Lab
  • Thyrocare Labs

Save
25%

RS.120
RS.160
+ RS. 100 (Home Collection)

Free thyroxine (free T4) tests are used to help evaluate thyroid function and diagnose thyroid diseases, including hyperthyroidism and hypothyroidism, usually after discovering that the thyroid stimulating hormone (TSH) level is abnormal. T4 and another hormone called triiodothyronine (T3) are produced by the thyroid gland. They help control the rate at which the body uses energy and are regulated by a feedback system. TSH stimulates the production and release of T4 (primarily) and T3 from the thyroid gland. A free T4 test may be ordered when a person has symptoms of hyperthyroidism or hypothyroidism, particularly if the TSH test is out of range. Fasting not essential. Avoid alcohol. Blood samples will be collected from your home/office