A method for diagnosis of fetal diseases by sampling the cells of the placental chorionic villi for DNA analysis, presence of bacteria, concentration of metabolites, etc. The advantage over amniocentesis is that the procedure can be carried out in the first trimester.

Synonyms: Samplings, Chorionic Villus Samplings, Chorionic Villi Biopsy, Chorionic Villi Chorionic Villi Biopsies Chorionic Villus Sampling Chorionic Villi Sampling Biopsies, Chorionic Villi Sampling, Chorionic Villus Chorionic Villus Samplings Chorionic Villi Samplings Sampling, Chorionic Villi Chorionic Villi Biopsy