Which blood test measures thyroid hormone levels?

The choice that accurately identifies the blood test that measures thyroid hormone levels is the option relating to Thyroid Function Tests. These tests specifically assess the levels of thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), as well as thyroid-stimulating hormone (TSH) produced by the pituitary gland.

Thyroid hormones play a crucial role in regulating metabolism, energy production, and overall hormonal balance in the body. By measuring these hormone levels, healthcare providers can diagnose various thyroid disorders such as hypothyroidism or hyperthyroidism and monitor treatment effectiveness.

Other options, like the Complete Blood Count, primarily evaluate blood cells and their components rather than hormonal levels. The Basic Metabolic Panel focuses on metabolic functions including glucose, calcium, and electrolyte levels, while the Lipid Panel measures cholesterol and triglyceride levels in the blood. Each of these tests serves a specific purpose related to different health parameters, but none directly pertains to thyroid hormone measurement.