Im in California I took the free state blood work exam that is combined with ultrasound those tests are known to have alot of false positives. I am 38 yrs with my 3rd so I opted for the amniocentesis its the most accurate for chromosomal disorders. Do some research there are many options. Enjoy your pregnancy!
The Harmony or materniT-21 screen for DS and other chromosomal abnormalities. The materniT-21 also gives you the gender as early as 10w. I'm in California but it's sort of up to each insurance company. From what I understand, you won't be have to pay more than $200 out of pocket if anything at all.