1. Early screening for healthy and tumor susceptible individuals

It is recommended to test the occurrence of tumor in the early stage by checking whether there are circulating tumor cells in the blood of healthy population. It is recommended to test once a year in order to detect the tumor in the embryonic stage, so as to ensure the early cure rate. However, it is recommended to test once every 3 months or half a year for people with cancer family history, people with HPV positive infection, chronic hepatitis, chronic gastritis, chronic enteritis, long-term smokers, people who are often exposed to toxic and harmful substances, people with high life pressure and high mental tension, and people with high risk of tumor susceptibility by genetic testing.

2. For cancer patients undergoing treatment, regular CTC testing is needed to monitor CTC dynamics

(1) The number of CTC significantly decreases or disappears, suggesting that patients can benefit from the current treatment. It is recommended to test once before each treatment cycle;

(2) The number of CTC continues to increase or no significant decrease, which indicates that the effect of early treatment is not good in patients, or the patients have drug resistance to the treatment, and there is a risk of disease deterioration. It is suggested that a professional doctor should conduct a comprehensive assessment of the disease progression.

3. Monitoring of tumor recurrence

(1) No CTC was detected, indicating that the patient's current condition is stable or the prognosis is good. It is recommended to test once every 3-6 months;

(2) The detection of moderate CTC indicates that the patient has a high risk of tumor recurrence / metastasis. It is suggested that a professional doctor should comprehensively evaluate the condition.