Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Congenital adrenal hyperplasia ?
    ### Response:
    Is genetic testing avaliable for congenital adrenal hyperplasia? Yes, genetic testing is available for many of the genes known to cause congenital adrenal hyperplasia (CAH). Carrier testing for at-risk relatives and prenatal testing are possible if the disease-causing mutations in the family are known.
    