Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Sickle Cell Disease ?
    ### Response:
    Screening Tests
                
People who do not know whether they make sickle hemoglobin (hemoglobin S) or another abnormal hemoglobin (such as C,  thalassemia, E) can find out by having their blood tested. This way, they can learn whether they carry a gene (i.
    