HCG Pregnancy Test Strip

Because the amount of a hormone called human chorionic gonadotropin (hCG) in your body increases rapidly during the first two weeks of pregnancy, the test strip will detect the presence of this hormone in your urine as early as the first day of a missed period. The test strip can accurately detect pregnancy when the level of hCG is between 25mIU/ml to 500,000mIU/ml.

The test reagent is exposed to urine, allowing urine to migrate through the absorbent test strip. The labeled antibody-dye conjugate binds to the hCG in the specimen forming an antibody-antigen complex. This complex binds to the anti-hCG antibody in the test region (T) and produces a red line when hCG concentration is equal to or greater than 25mIU/ml. In the absence of hCG, there is no line in the test region (T). The reaction mixture continues flowing through the absorbent device past the test region (T) and control region (C). Unbound conjugate binds to the reagents in the control region (C), producing a red line, demonstrating that the test strip is functioning correctly.