Since the 1990's, when fragments of cell free fetal DNA (cffDNA) were found in the mother's blood stream, researchers have been on a quest for what is regularly termed "The Holy Grail" of prenatal testing: a diagnostic test from just a mother's blood sample. If the fetal DNA could be identified and tested, then the fetus' genetic code could be diagnosed. Mothers (and practitioners) would be able to receive a diagnosis without risking miscarriage, as must be done with current diagnostic tests, Continue Reading