Ok, so I'm the first to admit I'm really not aware of the various tests involved in medicalized prenatal care, but my MIL insists that there's a blood test that can be done (on me, not some weird amnio-type thing) to identify the baby's sex. I really, reallly want to know but don't want to get U/S. Is this true? Anyone know what it's called? And is it mixed up with all kinds of other tests? Really don't want to know aobut an 'elevated risk' of trisomy issues or other high false-positive things.