Harmony is much more accurate than the quad screen. The old screenings have lots of false positives, but Harmony has 99.3 detection (or close to that) and a minuscule number of false positives (and negatives). I don't think you have anything to worry about if you got the all clear from Harmony. You should talk to a genetic counselor to get the exact information.
11/1/13 at 8:53am