Calcitonin
Calcitonin is a hormone made by C-cells in the thyroid gland. It plays a small role in fine-tuning blood calcium levels, although other hormones (parathyroid hormone, vitamin D) do most of the calcium-regulation work in the body.
Why it matters: Calcitonin is most relevant when reviewing thyroid nodules with specific patterns. Routine calcium-status review usually relies on calcium, parathyroid hormone, and vitamin D — calcitonin contributes specialized context when needed.
May increase with:
May decrease with:
What is Calcitonin?
Calcitonin is a hormone made by C-cells in the thyroid gland. It plays a small role in fine-tuning blood calcium levels, although other hormones (parathyroid hormone, vitamin D) do most of the calcium-regulation work in the body.
What might a high or low Calcitonin mean?
Calcitonin is most relevant when reviewing thyroid nodules with specific patterns. Routine calcium-status review usually relies on calcium, parathyroid hormone, and vitamin D — calcitonin contributes specialized context when needed.
What is the typical reference range for Calcitonin?
The general-population reference range shown here is < 8.4 pg/mL. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect Calcitonin?
It may be higher with: Medullary thyroid cancer, C-cell hyperplasia, Kidney disease, Pregnancy. It may be lower with: Thyroidectomy, Advanced age.
Track your Calcitonin over time
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