Highest affinity for T4 and T3.

T3 of 71 ng/dL. T4 of 2.2 ug/dL, TSH of 9.4 mIU/L.T3 of 71 ng/dL. T4 of 2.2 ug/dL, TSH of 9.4 mIU/L.

T4

FT4 of 3.3 ng/dL, T4 of 17.1 ug/dL, TSH of 0.13 mIU/L.

Major site of action of Thyrotropin-releasing hormone.

T3

Free T4

Metabolically active form of Thyroid hormone.

T4 of 8.12 ug/dL, TSH of 7.08 mIU/mL, T3 of 111.4 ng/dL.

Level of thyroid hormones in subclinical hyperthyroidism.

Membrane-bound enzyme produced by the follicular cells and functions by lodination and coupling of the iodotyrosine residues in the thyroglobulin.

Low TSH, low T4, low T3.

TSH

Hormones produced by the thyroid gland, except;

Level of serum TSH in subclinical hypothyroidism.

Most useful test in assessing the thyroid function

Considered as the "Pre-Hormone".

Hormone that signals the thyroid follicular epithelial cell to engulf the processed thyroglobulin through endocytosis.

Carries the majority of T4 in the bloodstream.

Serum T4/T3 level in subclinical hypothyroidism.

About 99% of the circulating thyroid hormone are unbound to proteins and are readily available for hormonal activity.

A glycoprotein stored in the follicular colloid and serves a preformed matrix containing tyrosyl residues.

This hormone stimulates the thyroid gland to produce and release thyroid hormones.

This is an inactive form of T3 which is eliminated quickly by the body after inner ring deiodination.

Ideal tumor maker for thyroid cancer patient treated with surgery and/or radioactive ablation.

If the thyroid hormone is not secreted, the TSH level will be very high in an attempt to stimulate the gland to secrete more.

Level of thyroid hyperthyroidism.

If the patient's thyroid gland is producing much thyroid hormone, then the circulating TSH will be suppressed.

TSH of 0.26 mIU/L, T3 of 144 ng/dL, T4 of 6.9 ug/dL.