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Also reported in: ng/L, pmol/L
Your calcitonin is in the normal range, indicating no excessive C-cell production. Mild elevation can occur with C-cell hyperplasia, chronic kidney disease, and certain medications.
Your calcitonin is undetectable. Calcitonin is produced by thyroid C-cells. An undetectable level is a very reassuring baseline result for medullary thyroid cancer surveillance.
No action needed. If you have familial history of MEN2 syndrome, continue scheduled genetic and clinical surveillance.
Calcitonin undetectable — no detectable calcitonin productionYour calcitonin is within the normal reference range. This is a reassuring result for medullary thyroid cancer (MTC) screening. Calcitonin is the most sensitive and specific marker for MTC.
No action needed. If you have a thyroid nodule or family history of MEN2, continue scheduled monitoring.
Calcitonin within normal reference range — no elevated medullary thyroid cancer markerYour calcitonin is in the low-normal range. This is a favorable baseline result for medullary thyroid cancer and other calcitonin-producing tumor surveillance.
No action needed.
Calcitonin: low-normal — favorable baseline for thyroid cancer surveillanceYour calcitonin is in the normal range, indicating no excessive C-cell production. Mild elevation can occur with C-cell hyperplasia, chronic kidney disease, and certain medications.
No specific action required.
Calcitonin within reference rangeYour calcitonin is in the optimal range, reflecting healthy thyroid C-cell function with minimal production.
No action needed.
Calcitonin: optimal — minimal calcitonin levelYour calcitonin is above the sex-specific reference range. Mildly elevated calcitonin can indicate C-cell hyperplasia (a precursor to medullary thyroid cancer), early medullary thyroid carcinoma, or benign conditions like chronic kidney disease, hypercalcemia, and certain medications (proton pump inhibitors).
Discuss with your hormone specialist. Thyroid ultrasound, calcium stimulation test, and genetic testing for RET mutations (MEN2 syndrome) may be recommended.
Calcitonin >10 pg/mL (female) or >19 pg/mL (male) — borderline elevated; C-cell hyperplasia or early MTC possibleYour calcitonin is significantly elevated. At this level, medullary thyroid carcinoma is highly suspected. MTC is a rare but aggressive cancer arising from thyroid C-cells. It can occur sporadically or as part of MEN2 syndrome.
Seek urgent endocrinology or thyroid surgery specialist referral. Thyroid ultrasound with fine-needle aspiration and genetic testing for RET mutations should be arranged promptly.
Calcitonin >50 pg/mL — significantly elevated; medullary thyroid carcinoma highly suspectedYour calcitonin is critically elevated. At this level, medullary thyroid carcinoma is highly probable and urgent surgical evaluation is needed. Very high calcitonin may indicate metastatic disease.
Seek urgent specialist thyroid surgery or oncology evaluation immediately. Staging imaging and surgical planning should be initiated without delay.
Calcitonin >100 pg/mL — critically elevated; medullary thyroid carcinoma confirmed or highly probableUpload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.