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 WB); WWOR-TV (channel 9) in Secaucus, New Jersey (part of the New York City market) and KCOP-TV (channel 13) in Los Angeles were de facto O&Os prior to Viacom's buyout of Chris-Craft's stake in UPN, while WPWR-TV (channel 50) in Chicago was an affiliate of UPN throughout the network's run (and would not be co-owned with the two other larger-market stations until after Fox purchased it from Newsweb Corporation in 2002). In September 2006, these stations became O&Os of MyNetworkTV, which was created in response to The CW's decision to affiliate stations owned by Tribune Broadcasting and network part-owner CBS