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why are T3 and T4 levels dropping?
An_252381 posted:
From beginning treatment in '09 plus changing doctors and trying different meds the only consistent pattern is that my T3 and T4 levels are dropping and wondering why? Current Dr. states that since adding some T3 it is suppressing my T4?

'09 labs on 50 mcg Levo:

FT4 1.53 (.8-1. FT3 3.2 (2.3-4.2) TSH .005

most recent labs 6/13 with 50 mcg Levo and 5 mcg Liothyronine

FT4 .84 (.82-1.77) FT3 2.4 (2.0-4.4) TSH 2.1 (.450-45)

biggest complaint is weight gain of 6-8 lbs . Had maintained weight for years but routine has not been working since I started meds. Dr did increase T3 to 10 mcg to try that. Appreciate any insights on the dropping levels.

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