My sister has been diagnosed with Factor Five Leiden. How can I be tested for this?

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Factor V Leiden is a mutation of one of the clotting factors in the blood. This mutation can increase your chance of developing abnormal blood clots, most commonly in your legs or lungs. You can confirm it by genetic testing with blood which involves examining your DNA, the chemical database that carries instructions for your body's functions. Genetic testing can reveal changes (mutations) in your genes that may cause illness or disease.

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