also known as Calcitonin in Lymph node fine needle aspirate
Calcitonin is a hormone that is produced in the parafollicular cells (commonly known as C-cells) of the thyroid gland. Calcitonin is involved in helping to regulate levels of calcium and phosphate in the blood, opposing the action of parathyroid hormone. Alternate Names: Human Calcitonin, Thyrocalcitonin