quad screen

quad screen

A prenatal lab screen (blood test) for Down syndrome, which is drawn at 16 to 18 weeks of gestation. Elevated inhibin A and beta-hCG, and reduced AFP and oestriol are suggestive of a Down syndrome baby, giving the mother the option to abort the gestation in the early second trimester.
Mentioned in ?
References in periodicals archive ?
Also, quad screen technology can display four independent
Using a maternal blood draw, the quad screen examines four biochemical analytes: alpha-fetoprotein (AFP), a protein made by the fetus; human chorionic gonadotropin (hCG), a hormone made by the placenta; estriol, a hormone made by the placenta and the liver of the fetus; and inhibin A, another hormone made by the liver.
If she wants to know more, I will explain that the second-trimester quad screen will detect 60% of Down syndrome cases, that the first-trimester combined screen can identify 85% or more, and that the free fetal DNA test will get closer to 99%.
Although they are more invasive, the quad screen, chorionic villus sampling, and amniocentesis remain the gold standard of aneuploidy detection.
KVM Switch Tech offers Digital Signage, Rackmount KVM Drawer, Rackmount LCD, Industrial LCD, PIP Quad Screen Splitter, Fiber Optic Extender, Video Splitter, Video Extender, Video Switch, Video Matrix Switch, Video Converter, Server Environment Monitoring, KVM Switch and cable/ adapter solutions.
The integrated screening method provides a better detection rate of birth defects than either the Maternal Quad Screen, which uses information from only the second trimester of pregnancy, or the Iowa Maternal First Trimester Screen, said Stan Berberich, PhD, University Hygienic Laboratory manager for the maternal and newborn screening programs.
According to the company, the 9 IGEL Linux models supporting Citrix XenDesktop include traditional desktop designs, PC upgrade cards, 19" LCD integrated units and quad screen units.
Also new is a multiple-feeder/single-line operator interface for the KCM, called K-Vision, which includes a quad screen feature.
A second, mote enthusiastic viewer, calling himself Jack Cralth, was "taken to the premiere as a guest" and was "out and out amazed, you have the idea the director is a guy to watch, the film has a kind of cool '70s split and quad screen thing going on but not in the way of cliched music video, reminds me of jarman, todd haines [sic], cammel [sic], roeg, that type film, very intense, little bit cold, but godard and new wave too.
The use of a quad screen split enables all school sites and the studio to be viewed and heard concurrently.
The nine IGEL Universal Desktops supporting Linux include traditional desktops, quad screen units, LCD integrated units and the innovative PC upgrade card that allows a legacy PC to be converted for only $160 into a powerful, secure, virus immune, virtual infrastructure access device.
According to ACOG (American College of Obstetricians and Gynecologists), the triple screen detects Down syndrome in 69% of the cases, while the quad screen detects it in 81% of cases.