Can you drink coffee before a thyroid test?

Answer 1

If you are only being tested for thyroid function, and your doctor has not asked you to do otherwise, you do not need to fast.

If you are undergoing a physical exam for your hyperthyroidism, it is allowed, although unwise to indulge in coffee before the exam, as caffeine can make your hyperthyroid symptoms seem much worse. This would potentially lead the physician to get an unclear impression of the impact of the dysfunction to your system. With an altered impression, it is possible you could end up over-treated for your condition.

Answer 2

It is not recommended to drink coffee before a physical exam. Coffee is a stimulant and can raise blood pressure and heart rate.

Answer 3

No! You should not drink anything but water for at least four hours before a metabolic test. Anything with sugar or caffeine could skew the results of the test.

Answer 4

FT3,FT4 is responsible for your body's energy . I suspect if you're doing something that needs more energy, FT4 and consequently FT3 increases. But that should be very temporary.