What tests are needed for thyroid cancer

What tests are needed for thyroid cancer?

Thyroid cancer patients should undergo serum biochemical examinations, which are helpful for the diagnosis and postoperative follow-up of thyroid cancer. It includes thyroglobulin, calcium and thyroid function.

1. Thyroglobulin determination: TG value>10ng/ml serum. For example, in simple goiter, elevated serum TG may be found. Therefore, TG qualitative diagnosis cannot be used as a tumor marker or thyroid residue. However, after 131I treatment, the thyroid no longer exists and TG should no longer exist. If radioimmunoassay is found to indicate recurrence or metastasis of thyroid cancer, TG can be used as a specific tumor marker for dynamic postoperative monitoring to understand whether there is recurrence or metastasis of thyroid cancer in the body. If there are still thyroid residues, TG detection is for reference only and is not as effective as the former, so as not to interfere with the test results.

2. Calcium reduction: In the serum and thyroid tissue of normal people, the content of calcitonin is very small. The radioimmunoassay level of calcitonin is 0.1-0.2 ng/ml, and most of them are >50 ng/ml. Serum calcitonin is significantly elevated and is positive. Normal people do not have this reaction, but the effect of calcitonin on regulating blood calcium level is far less strong than parathyroid hormone. Most serum calcium levels are normal, and patients have no X-ray manifestations of bone absorption. If serum calcium returns to normal, it indicates that the tumor has been completely removed; if serum calcium is still very high, it means that there is still residual tumor or metastasis, which helps to detect tumor recurrence as soon as possible, improve treatment effect, and increase survival rate.

3. Thyroid function test: Patients with thyroid cancer should undergo thyroid function tests, including plasma PBI, serum T