What Are the Limitations of Using Calcitonin as a Cancer Marker?
Although calcitonin is a useful biomarker for medullary thyroid carcinoma, it has its limitations. False positives can occur due to other medical conditions or even certain medications. Moreover, not all medullary thyroid carcinomas secrete high levels of calcitonin, which can lead to false negatives. Therefore, calcitonin levels should be interpreted in conjunction with other clinical findings and diagnostic tests.
