What Is The Normal TSH Level In First Trimester Of Pregnancy?

Posted on Sat, 16 Mar 2013

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sat, 16 Mar 2013 Answered on

Sat, 6 Apr 2013 Last reviewed on

Question : My pregnancy test was found positive today and my TSH is 5.36. Is that fine?

Answered by Dr. Nilofer AR (34 minutes later)

Hello,
Thanks for posting your query on health care magic.

TSH of 5.36 is just above normal levels.
However , it is recommended that TSH levels are maintained below 2.5 mU/l in the first trimester of pregnancy and below 3 mU/l in later pregnancy.

So, i recommend you to repeat your thyroid profile tomorrow morning - fasting levels.
Thyroid profile includes free T3, free T4, TSH.

If TSH levels persists or higher than 5 mU/l, medications(thyroxin) need to be taken.
Thyroxin is completely safe. You need not worry.
Hope this helps.
Feel free to ask if you need further clarifications.
I will be happy to help.
regards,
Dr Nilofer

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar