Inject air into the vial before drawing medication, avoid air intake, and expel excess liquid for accurate dosage.
Inject the required amount of air into the vial prior to drawing up the medication. To ensure accurate measurement and avoid air bubbles, it's essential to expel gas and withdraw a slightly greater volume than needed before expunging the liquid to the precise amount.
After withdrawal, ensure the plunger is depressed outside of the liquid to displace air and prevent bubbles from entering the solution. Carefully drawing the plunger up slowly and following the liquid helps avoid air intake, maintaining measurement accuracy.
When withdrawing liquid, it's recommended to slowly withdraw 1-2 mL greater than the desired volume, then expunge the excess liquid back to reach the accurate volume for precise dosage (Figure 1.34c and d).
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