Thyroid
4 markers in this category
Free T3 (Triiodothyronine)
Free T3 is considered the most active thyroid hormone and may be particularly relevant as we age. Some healthcare providers note that monitoring T3 levels can help support energy, cognitive function, and metabolic health in older adults.
Free T4 (Thyroxine)
Free T4 is the main thyroid hormone and may become increasingly important to monitor with age. Some healthcare providers note that thyroid function can change over time, potentially affecting energy, cognitive clarity, and bone health in older adults.
TPO Antibodies
TPO antibodies may signal autoimmune thyroid activity. In adults over 60, thyroid autoimmunity may have developed gradually over years. Testing can help your healthcare provider understand whether thyroid function changes are autoimmune-related and guide appropriate care.
TSH (Thyroid Stimulating Hormone)
Your TSH level shows how hard your pituitary is pulling on your thyroid. The laboratory uses 0.27 to 4.20 mE/L as the usual range. When you are losing weight this is one of the first numbers people look at. A raised TSH fits an underactive thyroid. A low value fits an overactive one. What matters just as much is what the thyroid does not explain. An underactive thyroid usually accounts for a few kilos, not tens. A baseline at the start of your programme is what makes later measurements genuinely useful.