Blood test frequency?

I am 7 weeks pregnant, almost 2 years RNY post-op, and recently had my first OB/GYN visit.  At that visit, I was given a list of the tests that would occur at which points.  At no time will any blood tests be ordered that will measure my protein/iron/vitamin levels.  

I know that my surgeon's office will order them if I request.  My question is, did you monitor your nutritional levels during pregnancy, and if so, how often or when should I get them run?

Thanks!

Usually vit levels are drawn once each trimester. The bigger the baby gets the more he will take from u. Some obs follow it and some see their reg dr that follows their labs. I myself followed a dr that specializes in post wls patients as she was more up to date and more knowledgeable on treatment for certain vitamin defencies. The only prob I had was drop in b12 and continued anemia. Treatment was b12 injection everyother week and additional iron tab with improvement in both. Also continued monitoring if u choose to bf as again the bigger they get the more they take. Hope this helps
Tiffanie

My midwife wants my vitamin and mineral levels done once a trimester. My 2-year follow-up with my surgeon is this month, so my 2nd trimester tests will get done at that appointment.