T7= (T4 x T3-Uptake)/100
This calculation is an attempt to correct for variations in thyroxine binding proteins.
T7 will usually be elevated in patients with hyperthyroidism.
T7 will usually be decreased in patients with hypothyroidism. It may also be low in patients with non-thyroid illness.
|Disorder||Total T4||T3 Uptake||T7|
- males: 1.22 – 4.86
- females: 0.99 – 4.71