How long should I wait for a blood test after a hemisection of the thyroid for cancer

After hemisection of thyroid cancer, serum thyroglobulin, procalcitonin, and thyroid color Doppler ultrasound are usually performed one month later. Serum calcium, serum sodium and other electrolytes can also be checked. Hemisection of thyroid cancer is a total or near-total thyroidectomy when the patient's tumor is relatively large or the tumor invades surrounding tissues. It is generally suitable for patients whose primary thyroid cancer can be removed and have no distant metastasis.

1. Serum thyroglobulin: Thyroglobulin is a specific marker for diagnosing thyroid cancer. The normal value of thyroglobulin is below 0.08ng/ml. If it exceeds this range, it means that the patient has thyroid cancer. Postoperative review of this indicator can determine whether it has recurred.

2. Procalcitonin: The normal value of procalcitonin is 0.068-4.2ng/ml. If procalcitonin increases, it indicates that thyroid cancer may have recurred or distant metastasis has occurred. It can be used for the follow-up of patients after hemisection of thyroid cancer.

3. Thyroid color ultrasound: Thyroid color ultrasound can observe the size, shape, boundaries, blood flow of the thyroid gland, and whether there is metastasis to the lymph nodes around the thyroid gland, so as to determine whether thyroid cancer recurs after hemisection;.

4. Serum calcium: Serum calcium refers to the test of serum extracted from the vein to determine whether its calcium content is normal. If the serum calcium is low, it indicates that there may be bone metastasis after hemisection of thyroid cancer. At this time, further examination is required to determine whether there is bone metastasis.

5. Serum sodium: Serum sodium refers to the sodium ion content in serum. The normal value is 135-145mmol/L. If the serum sodium is low, it may be a recurrence of thyroid cancer, which can also be confirmed through the next step of examination.

If the patient's postoperative thyroglobulin, procalcitonin, thyroid color ultrasound, etc. show abnormalities, ECT (emission computed tomography) can also be used to understand the growth of the tumor and whether distant metastasis has occurred.