I'm high risk but I started every 2 weeks at 22 weeks with my regular OB.
I see high risk doctor every 4 weeks for now to measure growth.
I have full labs including vitamin levels monthly.
I think they start weekly at 36 usually but they may go sooner with me this time.
Mommy to Patrick 05/19/05, Parker 11/20/09 and Paxton Arrived 2/14/13