Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency ?
    ### Response:
    How is non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency diagnosed? A diagnosis of non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency (NCAH) is often suspected based on the presence of characteristic signs and symptoms.
    