ndt testing how to read and interpret

[jacrjacr]

i am about to go get blood test after being on nature throid 4 weeks...i was on thiroyd before that for 2 months......HOW DO I READ THE TEST...i know how to read them taking synthroid but am confused about ndt ...some people have said they have higher levels of ft4 and some people say it hardly registers.....

HOW LOW IS TOO LOW TSH

WILL FREE T4 AUTOMATICALLY BE LOW...or is that a signal for something else.

hence in the past i had low ft3 ft4 yet .02 low low tsh so i am wondering what to look for and expect and how to talk to doctor about it......in the past i had low ferritin but i am taking that now...

i have always been negative for antibodies....