You can test the website for free during this trial period. (bdsmsites.biz)
The lab's prenatal testing website does list a series of published papers, however none of these describe a reliable SNP - based prenatal paternity test used on maternal blood. (newscientist.com)
You can run an unlimited number of tests with an infinite number of variants; the only limitations are your time and the number of visitors you can test website changes on. (epolitics.com)