British doctors have discovered a new procedure to test for Down's syndrome in pregnancies that is far more accurate than conventional testing, The Guardian reported Wednesday. One doctor involved in the study, which uses advanced DNA analysis to detect abnormalities, called it "transformational." In the 14-month-long study, the new procedure, called reflex DNA screening, had a 95 percent detection rate for Down's syndrome and two other rare genetic disorders, compared to 81 percent with conventional testing.