Going to get tests done for my thyroids, should I fast? How long will it take to get the results? Want to see if they have anything to do w/ alopecia

Get Instructions. The doctor's office or clinic that ordered the tests should provide you with clear printed instructions and explain any part you don't understand. Also, they should be the best source of the info you want about time frame and alopecia. No other source of info is better since no one knows their plan better than they do. Good luck!