A 27-year-old female asked:
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started synthroid (thyroxine) 75mg blood tests showed tsh went from 47.2 down to 11.1. do you think increased dosage necessary?

2 doctor answers
Dr. Phillip Goebel
15 years experience Emergency Medicine
Likely: That TSH while much better is still elevated. Talk with your regular physician about your symptoms and any other testing they have done.
Answered on Aug 8, 2014
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Dr. Jeffrey Juchau
32 years experience Family Medicine
Make sure this test was at least 6 weeks from when you started synthroid, it takes that long for TSH to stabilise
Aug 8, 2014
Dr. Carol Stauffer-munekata
35 years experience Family Medicine
Yes - Increase dose: Your TSH is still elevated - although improved. A slightly higher dose of Synthroid (thyroxine), (thyroxine) ie 0.1 mg is recommended. Follow up with your Doctor and have the lab tests repeated after you have been on the new dose of Synthroid (thyroxine) for several weeks.
Answered on Aug 9, 2014
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