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Your T3 uptake is within the expected range. This supports a balanced thyroid-binding protein picture when the rest of the thyroid panel is also in range.
T3 uptake is an older indirect thyroid test that reflects thyroid hormone binding proteins rather than T3 hormone itself. A very low result can occur with high thyroid-binding globulin, pregnancy, estrogen therapy, or some thyroid states.
Discuss this with your clinician alongside TSH (the signal hormone your brain sends to your thyroid), free T4 (the main thyroid hormone in your blood), total T4, medications, and pregnancy or hormone context.
T3 uptake: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})A low T3 uptake often reflects changes in thyroid hormone binding proteins rather than a standalone thyroid diagnosis. It is most useful when interpreted with total T4 and TSH (the signal hormone your brain sends to your thyroid).
Ask your clinician whether this fits your TSH (the signal hormone your brain sends to your thyroid), free T4 (the main thyroid hormone in your blood), total T4, medications, and hormone history.
T3 uptake: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})A slightly low T3 uptake can be a binding-protein pattern and is not usually interpreted alone.
Review it with the rest of the thyroid panel if symptoms or other thyroid markers are present.
T3 uptake: {{value}} {{unit}} — borderline lowYour T3 uptake is within the expected range. This supports a balanced thyroid-binding protein picture when the rest of the thyroid panel is also in range.
This marker is reassuring on its own. Interpret it with TSH (the signal hormone your brain sends to your thyroid) and T4 results.
T3 uptake: {{value}} {{unit}} — within reference rangeYour T3 uptake sits in the expected range for thyroid hormone binding context.
This marker is reassuring on its own when the rest of the thyroid panel fits.
T3 uptake: {{value}} {{unit}} — optimalA slightly high T3 uptake can reflect lower thyroid-binding globulin or thyroid hormone patterns, but it is not diagnostic by itself.
Ask your clinician how this fits with TSH (the signal hormone your brain sends to your thyroid), free T4 (the main thyroid hormone in your blood), total T4, medications, and symptoms.
T3 uptake: {{value}} {{unit}} — borderline highA high T3 uptake can reflect changes in thyroid-binding proteins or thyroid hormone availability. It should be interpreted with TSH (the signal hormone your brain sends to your thyroid) and T4 rather than used alone.
Discuss with your clinician, especially if TSH (the signal hormone your brain sends to your thyroid) or T4 is also abnormal or you have thyroid symptoms.
T3 uptake: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})A very high T3 uptake is unusual and needs context from the full thyroid panel, binding-protein states, and medication history.
Arrange clinician review with TSH (the signal hormone your brain sends to your thyroid), free T4 (the main thyroid hormone in your blood), total T4, and symptom context.
T3 uptake: {{value}} {{unit}} — very high (ref: {{low}}–{{high}})Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.