What's wrong with a low T3 thyroid hormone test?

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Hello doctor! Recently, I have seen people with weight loss, fatigue, tinnitus and difficulty swallowing when eating. I went to the doctor and did a thyroid test, all parameters were normal but T3 decreased. The doctor told me what to do with a decrease in the T3 thyroid hormone test?
Anonymous customer
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Hello. When the patient feels tired, loses weight, it is necessary to think of the common cause of Grave's disease. However, when suffering from this disease, the T3, T4 indexes often increase. If your thyroid hormone T3 is low, you need to look for another cause.
You can go to one of the Vinmec Health System hospitals nationwide to get more specific advice and examination from doctors. Thank you for trusting and sending questions about Vinmec. Best regards!
Answered by Doctor of General Internal Medicine - Vinmec Times City International General Hospital.