fFN Test Offers information about premature labor and using the fetal fibronection test to assess the risk of premature delivery.
Health Library Overview of Chorionic Villi Sampling. Includes preparation, risks and affects.
How Stuff Works Illustrated narrative describing an assortment of testing decisions.
Mother and Child Discusses purpose and procedure of chorionic villus sampling. Includes list of advantages and disadvantages compared to amniocentesis.
NT Laboratories Offers information on a variety of prenatal tests, including amniocentisis, and the ultra-screen.