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**IMPORTANT: CPT Code is informational only; obtain the Test Code for ordering.
Basal concentrations of >100 pg/mL have been found to have 100% positive predictive value for medullary thyroid cancer. Lower concentrations may be observed in some patients with clinically apparent medullary thyroid cancer.
See Laboratory Report
Calcitonin concentration is increased in patients with medullary thyroid carcinoma. Calcitonin concentrations may be used to monitor disease.
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.