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
War of the Quadruple Alliance unique example during the eighteenth century when Britain and France were on the same side. It came during a period between 1716 and 1731 when the two countries were allies. Spain would later join with France in the Bourbon Compact, and the two would become enemies of the British once more. War of the Quadruple Alliance The War of the Quadruple Alliance (1717–1720) was a result of the ambitions of Bourbon King Philip V of Spain, his wife, Elisabeth Farnese, and his chief minister Giulio Alberoni to retake territories in Italy lost to the Habsburgs in Vienna, and perhaps even