HCG test is to check whether the level of HCG in a person’s body is normal or not. HCG is human chorionic gonadotropin, and HCG test can be mainly used to determine early pregnancy and diseases. 1. HCG test is an important indicator to monitor early pregnancy, such as early pregnancy test paper detects HCG content in urine, but a more accurate early pregnancy test is to draw blood to check HCG content in blood. 2. It can be used to judge trophoblastic and germ cell tumors, such as chorionic villus, chorionic cell carcinoma, spermatogonia and testicular cancer. 3. It can be used to determine other malignant tumors, such as breast cancer, gastrointestinal tract cancer, lung cancer and pancreatic cancer. 4. It can be used to judge benign diseases, such as ovarian tumor, endometriosis, etc.