An early thyroid imbalance with suppressed TSH but still-normal thyroid hormone levels and few symptoms. Blood testing identifies the low TSH before overt hyperthyroidism and its cardiac risks develop.
Our comprehensive check-up screens for subclinical hyperthyroidism and hundreds of other conditions.
The ratio of free thyroxine (fT4) to thyroid-stimulating hormone (TSH) provides additional insight into thyroid function by evaluating how the pituitary gland responds to circulating thyroid hormone levels. It can reveal subtle thyroid dysfunction that individual fT4 or TSH values alone may not capture.
Free T4 (fT4)Free T4 is produced by the thyroid gland and converted to active T3 in body tissues.
Free T3 (fT3)Free T3 is the active thyroid hormone that regulates metabolic activity and energy use in cells.
TSHControls thyroid hormone production, which regulates metabolism and energy. Thyroid dysfunction affects many body systems and can cause fatigue, weight changes, temperature sensitivity, and mood disturbances.
