Check thyroid labs: The best way to determine if someone has a thyroid problem is to talk with a doctor, get an exam, and check thyroid labs to see if their levels are right for them. While too much thyroid hormone could cause a fast heart rate, there are many other causes that a doctor can check out as well, including caffeine, smoking, poor conditioning, certain meds, heart problems, and anemia.
Answered 11/7/2014
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Thyroid blood tests: Your health care provider will need to check your thyroid function through blood work. This will provide an answer very quickly as to whether your heart symptoms might be due to abnormal thyroid funciton.
Answered 7/8/2012
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