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A 17 year old patient vehemently refuses to allow you to collect a blood specimen he is threatening to harm you if you come near him, what do you do?
Since he is a minor it is up to the parents if they want his blood drawn or not. try to talk him into it, and then if he still refuses then inform the doctor and the nurse in charge of him, you may have to chemically sedate him, or hold him down. Good luck!