A member asked:

My doctor only did a blood test for tsh i asked for t3 (liothyronine) t4 to but she said she will order more test if something is abnormal?

A doctor has provided 1 answer
Dr. Robert Killian answered

Specializes in General Practice

Medicine and Billing: That is how it is done. The TSH is the first line test for screening and then further investigation happens if abnormal. Many people with under active thyroid can have a normal t3 (liothyronine) and T4 and still be under active.

Answered 1/15/2015

4.3k views

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