Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Chromosome 4q deletion ?
    ### Response:
    How is chromosome 4q deletion diagnosed? There are several different specialized tests that can be used to diagnose a chromosome 4q deletion. These include: Karyotype - a karyotype is a laboratory test that produces an image of a person's chromosomes. This test can be used to diagnose large deletions.
    