Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Alagille Syndrome ?
    ### Response:
    A health care provider diagnoses Alagille syndrome by performing a thorough physical exam and ordering one or more of the following tests and exams:
                
- blood test  - urinalysis  - x ray  - abdominal ultrasound  - cardiology exam  - slit-lamp exam  - liver biopsy  - genetic testing

    