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A member asked:

Why do doctors tend to check only tsh & not t3, (liothyronine) t4 by themselves?

A doctor has provided 1 answer

TSH is for screening: Tsh is considered a screening test. It's cheaper than ordering all three and the T3 (liothyronine) and T4 aren't usually suggested for screening. Doctors will use all three if the screening test is abnormal or they are following known thyroid disease.

Dr Friedlander and another doctor agreed

Answered 1/15/2015

5.2k views

Thank

Related Questions

A member asked:

Ok so my T3 (liothyronine) total is 105 my T4 is 1.1 my TSH is 5.69 ? Should my doc be putting me on thyroid meds? I have bad axsiety for 3 months never before?

A doctor has provided 1 answer

A member asked:

Dear doctor, my tsh level is 14.29, t4 is 7.7 and t3 (liothyronine) is 0.86. doctor gave me medicine to take before breakfast. do i have to take it lifetime. thanks?

A doctor has provided 1 answer

A member asked:

My TSH valus are TSH 8.60, T3 (liothyronine) 1.34, t4(thyroxine) 77.38 any complication. Or normal doctor any need to take medicine?

A doctor has provided 1 answer

A member asked:

My doctor says my T3 (liothyronine) and T4 levels are okay but the TSH levels are still off, what are the causes? I am taking .088 levothyroxine daily (from .150 to .112 to current dose) 10 + years ago had a radio-active iodine procedure.

3 doctors weighed in across 2 answers

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

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