Thyroid-Stimulating Hormone (TSH)

Diagnostic Blood Test: Thyroid-Stimulating Hormone (TSH) Thyroid-Stimulating Hormone (TSH) is an important marker for thyroid health which governs energy and metabolism. TSH acts as a signal that tells the thyroid when to produce more thyroid hormone. Abnormal thyroid levels may result in weight changes, heart rate changes, sleeping problems, hair loss, anxiety, or fatigue.Note: This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin. Cease biotin supplementation at least 72 hours prior to blood draw.