CRSSD festival â@crssdfest. The final Fall '16 lineup $135 weekend passes will be gone by end of the day! Tickets: http://ticketf.ly/29ytWz5 pic.twitter.com/0Px2ezB4jz.
The quad screen is usually done between 15 and 20 weeks of pregnancy. You'll have a blood sample taken and sent to a lab for analysis. Results are usually available in about a week. The test measures the levels of four substances in your blood: 1  alpha-fetoprotein (AFP), a protein made by the baby.
If you are too far into your pregnancy to have the combined test, you will be offered other tests. For Downâs syndrome, a blood test called the quadruple test is available from weeks 14-20 of pregnancy. For Patauâs and Edwardsâ syndromes, you will be offered a mid-pregnancy scan that checks for physical abnormalities.