We aimed to examine the opinions of parents' having a child with ASD, on genetic testing, in a Turkish sample. 951 parents' attitudes towards genetic testing were included. 89.1% of the parents did not take a genetic test during pregnancy. 87.6% of the parents agreed to take a genetic test if it could explain the cause of ASDs. 93% agreed to take a genetic test, if it would help to have a better treatment in the future. 63.8% of the participants would approve the storage of their DNA samples for the future studies. 94.8% considered being informed about the purpose of taking DNA material for the early diagnosis and 84.2% considered being suggested genetic tests for early diagnosis as important.