Triple and Quadruple Marker Tests: What Expecting Parents Should Know The triple and quadruple marker tests are prenatal blood tests that evaluate four key markers to assess the risk of chromosomal and neural-tube abnormalities in the fetus. Timely testing ensures informed medical decisions, early interventions, and peace of mind for expectant parents. Despite varying prices, the test can be easily done at home through trusted laboratories. Visit us:-https://guestcountry.com/Triple-and-Quadruple-Marker-Tests-What-Expecting-Parents-Should-Know