Adult: Males: <40 pg/mL; SI units: <40 ng/L. Females: <25
pg/mL; SI units: <25 ng/L
. Green-top tube or chilled red-top tube. Specimen must be
fasting.
■ Hormone produced by the thyroid gland.
■ Calcitonin reduces circulating calcium levels by increasing
calcium’s deposition in bone.
■ Used in the assessment of thyroid medullary cancer, lung
cancer, pernicious anemia.
