Is TSH alone enough to assess thyroid?

For screening, usually yes. If TSH is abnormal or symptoms are strong despite normal TSH, add free T4, free T3, and thyroid antibodies (TPO, TG).

Thyroid-Stimulating Hormone (TSH)

TSH is the pituitary signal that drives thyroid hormone production. It's the first-line thyroid screen. High TSH suggests an underactive thyroid (hypothyroidism); low TSH suggests an overactive thyroid (hyperthyroidism). Both impact testosterone, SHBG, energy, and metabolism.

Category: Thyroid
Units: mIU/L
Reference range: 0.4-4.0 mIU/L

What does a high Thyroid-Stimulating Hormone result mean?

Hypothyroidism (Hashimoto's most common). Subclinical at TSH 4-10, overt above 10.

What does a low Thyroid-Stimulating Hormone result mean?

Hyperthyroidism (Graves' most common), excess thyroid replacement, transient thyroiditis.

Why does Thyroid-Stimulating Hormone matter?

Untreated thyroid dysfunction looks identical to low T in many men. Always include TSH on a hormone panel.

FAQs

Is TSH alone enough to assess thyroid?: For screening, usually yes. If TSH is abnormal or symptoms are strong despite normal TSH, add free T4, free T3, and thyroid antibodies (TPO, TG).

Want Thyroid-Stimulating Hormone interpreted in the context of your full panel? Every FORM bloodwork tier covers it, with an MD walking you through the result.

Message on WhatsApp

Related thyroid markers

Free Thyroxine →