Testing a child for hypothyroidism

[HypoMom171]

Hi,

I'm Hypothyroid, as is my Mom.  My current levels are:

Thyroglobulin antibodies   1298
Thyroid Peroxidase            184
T3, Total                            116
T-4, Free                            1.6
TSH                                   .03

Mine was discovered 2 years ago when I was nursing my first daughter, and I am now on 75 mcg Synthroid.  My first daughter has very fine, very thin hair that pulls out too easily (my infant can easily pull out a large chunk).  So I want to have her tested to see if Hypothyroidism is the cause.  My pediatrician ordered a test for TSH and Free T-4. At my prompting to also have her autoantibodies checked (I want to also see if she is predisposed towards developing Hypothyroidism in the future), he added antithyroglobulin antibodies.  

My question is, is this a complete enough test?  Should he also be checking the peroxidase autoantibodies and/or anything else?

Thanks in advance,

Concerned Mom  

[HypoMom171]

Thank you for the information - you confirmed some of what I had read in "Thyroid for Dummies".  And regards my last lab, I think that was when my endocrinologist switched me from 88 mcg back to 75 mcg.  Thanks for the help.

Regards

[estrelinha]

He should also ask for TPO antibodies (peroxidase antibodies),but, usually doctors don't ask for many lab values in children unless they have a symptom or they look sick. The more lab values you ask the more blood you take from a child. Usually they ask for TSH and free T4, if the result is suspicious, then they will ask for the antibodies.Of course if you have an autoimmune disease of your thyroid there is a possibility for your child to have it too.
I have Hashi, and I have positive TPO and negative anti-Tg, so ask for TPO antibodies.
About you, with a TSH of 0.03 you're becoming hyper......Hypothyroidism is when your TSH is high and low free T4, so you may need to decrease your medication, talk to your ENDO.