Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Factor V Leiden thrombophilia ?
    ### Response:
    How is factor V Leiden thrombophilia diagnosed? No clinical features (signs and/or symptoms) are specific for factor V Leiden thrombophilia. The diagnosis of factor V Leiden thrombophilia requires a coagulation screening test or DNA analysis of F5, the gene for factor V, to identify the specific mutation that causes this condition.
    