Thyroid hormone- Free triiodothyronine (FT3)
Results within 24 hours
Blood draw included
Hyperthyroidism is when the thyroid is over active and can lead to symptoms such as weight loss and thinning of hair. This blood test will provide a measure of FT3 which can be used to diagnose this condition. A high free T3 result may indicate an overactive thyroid gland (hyperthyroidism) whereas a low free T3 results may indicate an underactive thyroid gland (hypothyroidism).