Human chorionic gonadotropin (HCG) is a glycoprotein hormone secreted by the developing placenta shortly after implantation. HCG can be detected in the urine and serum of pregnant women as early as 6 to 15 days after conception. The concentration of HCG increases to 5-50mIU/ml one week post implantation, reaches about 100mIU/ml at the time of the first missed menstrual period, and peaks at 100,000-200,000mIU/ml at the end of the first trimester.
The appearance of HCG soon after conception and its subsequent rise in concentration during early gestation growth make it an excellent marker for the early detection of pregnancy.
One Step HCG Pregnancy Test is a rapid test to detect the presence of HCG in urine specimens in a qualitative format sensitive to 15mIU/ml.