Easy to use, only 3 steps. Accuracy, high sensitivity and specificity. Human chorionic gonadotropin (HCG) is a glycoprotein secreted by the trophoblast cells of the placenta. After a few days of fertilization, HCG begins to secrete. With the trophoblast cells produce plenty of HCG, they can be discharged into urine through blood circulation. Therefore, the detection of HCG in urine samples can be used for the auxiliary diagnosis of early pregnancy. Test the human luteinizing hormone (hLH) with concentration of 500mIU/mL and the human thyrotropin (hTSH) with concentration of 1000uIU/mL, and the results are negative.