I can give you some facts and will if you want them , but I would say that facts probably aren't going to change the docs mind. Just DEMAND a retest and we'll deal with the rest later. Do not let them rupture your membranes, do not get any vaginal exams, they don't mean anything anyway, and don't let them do a rectal swab when they test you, unless of course you think the baby is coming out your butt
All the agencies with authority on the subject say testing before 37-39 weeks is stupid, so you shouldn't have to push TOO hard.