The hCG Pregnancy Rapid Test Midstream is a rapid chromatographic immunoassay for the qualitative detection of human chorionic gonadotropin in human urine, which aids in the early detection of pregnancy. It is ideal for the qualitative detection of human chorionic gonadotropin (HCG) in urine.

The test uses a combination of antibodies, including a monoclonal HCG antibody, for the selective detection of elevated hCG levels. The assay is conducted by adding urine to a hydrophilic stick, and the result is produced by colored lines.

The test contains anti-hCG particles and anti-hCG coated membrane.