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Discussion Starter · #1 ·
Just a little reminder and explanation.

Plasma transport
Most of the thyroid hormone circulating in the blood is bound to transport proteins. Only a very small fraction of the circulating hormone is free (unbound) and biologically active, hence measuring concentrations of free thyroid hormones is of great diagnostic value.

When thyroid hormone is bound, it is not active, so the amount of free T3/T4 is what is important. For this reason, measuring total thyroxine in the blood can be misleading.

More info here..........
http://en.wikipedia.org/wiki/Thyroid_hormone

And here............
Understanding thyroid lab tests......http://www.amarillomed.com/howto/#Thyroid

And yet even more annoying stuff highly recommended by moi!

TSI (thyroid stimulating immunoglobulin),TPO (antimicrosomal antibodies) TBII (thyrotropin-binding inhibitory immunoglobulin), Thyroglobulin Ab, ANA (antinuclear antibodies),TSH, Free T3, Free T4.

You can look this stuff up here and more.........
http://www.labtestsonline.org/understanding/conditions/thyroid.html
 

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Discussion Starter · #5 ·
Shelly said:
Now that they've found hypoechoic nodules on my thyroid thru US, and my TSH was within normal ranges, and I want the further tests done, (eg freeT3 and free T4, saliva test, and the others you recommend, is it best to see and ENT or an Endo? I have a referral from family practitioner to the ENT Sept 12th. I've seen him before for all the mucus, he sent a scope down my throat and said all was clear. Will he order further bloodwork?
Shelly, I sure don't know about the bloodwork but one would think that he would want more testing. I am glad you are seeing an ENT; they really are informed about this thyroid business.

 
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