Implied consent to draw blood is indicated by which action from the patient?

Implied consent for a medical procedure, such as drawing blood, is often determined by the patient's actions that suggest they agree to the procedure without having to verbally or explicitly state their consent. In the context of this question, when a patient extends their arm for a blood draw, it demonstrates a willingness to participate in the procedure. This physical gesture indicates that the patient understands what is about to happen and agrees to it, fulfilling the requirement for implied consent.

While other actions such as nodding or verbal agreements can suggest consent, extending an arm is a more definitive and clear action that directly corresponds to the procedure of drawing blood. It signifies readiness and cooperation, which are key components of implied consent in healthcare settings.