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 VHF stations to Buffalo (WKBW-TV, channel 7) and Hartford (WTIC-TV channel 3, now WFSB), NBC decided that its experiment was a lost cause, and put WBUF and WNBC up for sale. While it found a buyer for WNBC (which retained its NBC affiliation), there were no takers for WBUF, and it went off the air in 1958. NBC then affiliated with WGR-TV, where it remains to this day. NBC donated WBUF's license and some of its equipment to PBS member station WNED-TV, which took over the channel 17 frequency in 1959 (due to a number of transactions, the WBUF-TV license