When preparing injectable medication from a vial, what is the first step to take?

The first step in preparing injectable medication from a vial involves determining the mL of medication needed. This is a critical initial action because it dictates the entire preparation process. Knowing the correct volume ensures that the right dosage is drawn from the vial, which is essential for patient safety and efficacy of the medication.

Once the required amount is calculated, subsequent steps, such as cleaning the vial, inserting air, and drawing up the medication, can be performed accurately and efficiently. Understanding the correct dosage also helps prevent errors, such as overdosing or underdosing, which can have serious consequences for patient health.

This foundational knowledge ensures a systematic approach to medication preparation, prioritizing patient safety and effective treatment delivery.