LIBBY LIBRARY · TOPIC
thyroid tests
4 articles in this field-note collection.
Thyroglobulin antibodies: normal range and high results
Thyroglobulin antibodies (TgAb) signal thyroid autoimmunity. What a normal result is, what a positive one usually means, and how to read it with TSH.
Total T4 test: normal range, high and low, and pregnancy
Total T4 counts all the thyroxine in your blood, bound and free. Here's the normal range, why pregnancy and estrogen raise it, and when to check free T4.
Free T4 blood test: normal range, high and low causes
Free T4 is the unbound thyroid hormone in your blood. Here's what a normal level is, what optimizers aim for, why it runs low or high, and when it's urgent.
TSH blood test: normal range, high and low causes
TSH is your pituitary's signal to your thyroid. Here's what a normal TSH is, what optimizers aim for, why it runs high or low, and when it's urgent.