Free Thyroxine T4 High. Neither of these labs tell anything about cancer. A low t4 test result is a sign of hypothyroidism.
At your next visit with your doctor you may discuss getting free t4 and t3 ( liothyronine ) done for confirmation of normal status. If tsh is normal and you do not have any symptoms, you can leave it alone. Free t4, which tests for the amount of t4 that is available in the body, should range between 0.8.
The normal range for free t4 in adults is 4.6 to 11.2 micrograms per deciliter (mcg/dl).
Elevated free t4 elevated t4 with suppressed tsh is suggestive of primary hyperthyroidism, while a normal or elevated tsh may be present with certain conditions or due. Your hypothalamus and pituitary glands control the release of t4. High free thyroxine (t4) and low tsh. It show my tsh is 7.81 but strangely my free t4 is also high 26.5.