The Calcitonin, Serum Test measures calcitonin levels in the blood, a hormone secreted by the thyroid gland that regulates calcium and bone metabolism. This test is primarily used to detect medullary thyroid carcinoma (MTC), a rare type of thyroid cancer, and monitor treatment efficacy. This test is also helpful in diagnosing other thyroid or parathyroid disorders. An overnight fasting period of 8–10 hours is recommended for accurate results.

High Calcitonin Levels: May indicate medullary thyroid carcinoma, thyroid hyperplasia, or certain cancers. Low Calcitonin Levels: Generally normal but may need further evaluation if symptoms persist. Conditions Monitored: Medullary thyroid carcinoma (MTC) Thyroid nodules or hyperplasia Calcium metabolism disorders

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