🦋 Thyroid Function Tests

Tests that measure thyroid hormone levels and gland activity.

Thyroid-Stimulating Hormone (TSH)(TSH)

TSH is the pituitary gland's signal to the thyroid — it rises when the thyroid is underactive and falls when it is overactive. It is the single most sensitive test for detecting thyroid dysfunction.

Venous blood (serum separator tube)

Free Thyroxine (Free T4)(Free T4)

Free T4 measures the active, unbound fraction of thyroxine — the main hormone produced by the thyroid gland. It is ordered alongside TSH to confirm thyroid diagnoses and guide treatment decisions.

Venous blood (serum separator tube)

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