Cheap test for Down's babies. (2006, March). Hospital Doctor, 8. Retrieved February 21, 2008, from ABI/INFORM Complete database. (Document ID: 1011318301).

I located this article through the library’s database. Prior to 2006, prices for the CVS test had been about $300. Now CVS test is not only cheaper, but it is less time consuming and labor intensive. Currently the chorionic villus sampling is about $200 and provides faster results. A study conducted at the Institute of Child Health and King’s College Hospital in London showed CVS saved sixty percent of previous cost for genetic diagnosis. This study comprised of 17,446 pregnancies in which an abnormality was discovered. The new process of CVS sampling involves, not karyotyping as before, but measurement of the distribution and expression of DNA by quantitive fluorescent polymerase chain reaction. This procedure produces faster results and is less time consuming but is not as accurate as karyotyping. The diagnosis is only ninety-seven percent as compared to ninety-nine percent.