Triple test Triple test The triple test, also called triple screen, the Kettering test or the Bart's test, is an investigation performed during pregnancy in the second trimester to classify a patient as either high-risk or low-risk for chromosomal abnormalities (and neural tube defects). The term "multiple-marker screening test" is sometimes used instead. This term can encompass the "double test" and "quadruple test" (described below). The Triple screen measures serum levels of AFP, estriol, and beta-hCG, with a 70% sensitivity and 5% false-positive rate. It is complemented in some regions of the United States, as the "Quad screen" (adding inhibin A to
Owned-and-operated television stations in the United States network chose to affiliate with Westinghouse's KYW-TV, Philadelphia's longtime NBC affiliate. After a bidding war, WCAU was sold to NBC. KYW became a CBS owned-and-operated station after Westinghouse's merger with CBS a few months later. As part of the same deal, NBC in turn transferred its own O&O stations in Denver (KCNC-TV, channel 4) and Salt Lake City (KUTV) to Westinghouse/CBS, and those stations became CBS O&Os after Westinghouse merged with CBS. NBC and CBS also swapped transmitting facilities in Miami between the then-weaker CBS-owned WCIX (channel 6, now WFOR-TV, channel 4) and the then-stronger NBC-owned WTVJ (channel 4, now