I had my second prenatal visit yesterday and although I should only be 13 weeks according to my last period, the doc says I am measuring more like 15 weeks. At my first visit they thought I was a few weeks further along as well. I declined to have a dating us done on the first visit, but my doc told me that if I want to have the AFP screening test done it has to be in the 16th week so I need to get a correct date. She also told me the AFP test returns a false positive for things like down syndrome, spina bififda and others at least 10% of the time. I was just going to skip it altogether, but dh wants to have it done. So now I have an appt. on Thurs for an us and then will be having the blood test done soon thereafter. I guess I am just wondering how many of you have or will have this screening done and have you experienced a false positive? I had the test with dd and it was negative, but I was not aware of the chances of innacuracy the first time, or I might have skipped it then too.
post #1 of 14
2/4/03 at 12:49pm