I'm 28 and they told me they Dnt do those
I took mine at 29 weeks but I moved states that why I took it never been in this hospital
I just took Mine this week I am 25 weeks they say to start your pre registration when you are in your 7th month that is why I went so early
I didn't take it yet, but I'm 28 weeks 3 days and will be taking it at 36 weeks!