How often should I have recombinant TSH testing for thyroid cancer follow-up?
The answer to this question is not yet clear, and will differ depending on the type of cancer, initial findings after treatment, years after initial treatment, and potential presence of other associated risk factors and medical conditions. For the opinion of one group of experts see Practical application of recombinant thyrotropin testing in clinical practice. Endocr Pract. 2001 May-Jun;7(3):195-201. For example, some analyses suggest that if a patients has a negative scan and ultrasound and undetectable thyroglobulin after an initial TSH-stimulated test, a second TSH-stimulated thyroglobulin is of limited value Predictive value of recombinant human TSH stimulation and neck ultrasonography in differentiated thyroid cancer patients Thyroid. 2008 Oct;18(10):1049-53.