The Sekisui Diagnostics OSOM Ultra hCG Combo Test is a simple immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in serum or urine for the early confirmation of pregnancy. It is a rapid serum or urine test for detecting hCG. The test is a solid-phase, two-site immunometric assay in which a combination of monoclonal and polyclonal antibodies is used to selectively detect elevated levels of hCG in serum or urine with a high degree of sensitivity. Get fast and accurate results in 3-5 minutes. Shelf life is 24 months.