If you are concerned that someone else’s blood could have gone into your body it would be good to go for a test for HIV, hepatitis B and C.
I would just recommend talking with your health professional about this. They would be able to ask you questions about your situation and work out with you what tests would be good to do. For example if you are already vaccinated for hepatitis B there would be no need for a hepatitis B test.
You are well past the testing window period as the accident was 9 months ago. This means your tests will give an accurate result for that risk.
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