3 doctors weighed in:
What does it mean if I have high tsh, t3, (liothyronine) T4 levels?
3 doctors weighed in

Dr. Edward Hoffer
Internal Medicine - Cardiology
1 doctor agrees
In brief: HiTSH=hypo,hiT4 hype
Thyroid function is measured many ways.
The TSH is your body's call for more hormone, so a high TSH suggests underactive thyroid, very low TSH overactive. The t4/t3 levels are measures of circulating hormone, so high T4 or T3 (liothyronine) suggest hyperthyroidism and vice versa. T4 levels can beaffected by hormones and so need to be interpreted carefully. For initial testing, the TSH alone best test.

In brief: HiTSH=hypo,hiT4 hype
Thyroid function is measured many ways.
The TSH is your body's call for more hormone, so a high TSH suggests underactive thyroid, very low TSH overactive. The t4/t3 levels are measures of circulating hormone, so high T4 or T3 (liothyronine) suggest hyperthyroidism and vice versa. T4 levels can beaffected by hormones and so need to be interpreted carefully. For initial testing, the TSH alone best test.
Dr. Edward Hoffer
Dr. Edward Hoffer
Thank
Dr. Eric Toloza
Surgery - Thoracic
In brief: Hyperthyroid
High levels of all three of these, tsh, t3, (liothyronine) and t4, is due to the pituitary gland causing too much tsh, which causes the thyroid to make too much T3 (liothyronine) and t4.
Normally, high T3 (liothyronine) and T4 will cause the TSH to be low, but high levels of all 3 suggest a possible pituitary tumor making too much tsh.

In brief: Hyperthyroid
High levels of all three of these, tsh, t3, (liothyronine) and t4, is due to the pituitary gland causing too much tsh, which causes the thyroid to make too much T3 (liothyronine) and t4.
Normally, high T3 (liothyronine) and T4 will cause the TSH to be low, but high levels of all 3 suggest a possible pituitary tumor making too much tsh.
Dr. Eric Toloza
Dr. Eric Toloza
Thank
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