Thyroxine, Total (T4)




T4 is one of two major hormones produced by the thyroid gland (the other is called triiodothyronine, or T3).

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.

Requirements: None

CPT Code:  84436

Walk-in or call 303-552-0657 to schedule an appointment.