What is the most appropriate method for administering injections with insulin pens?

• A. Inject at a 90-degree angle, leave the needle in for 5-10 seconds and then remove
• B. Inject at a 45-degree angle, leave the needle in for 5 seconds
• C. Inject at a 90-degree angle, withdraw immediately after
• D. Inject at a 70-degree angle, hold for 3 seconds

Answer: (A)

When giving insulin with pens, the goal is to deliver the dose into subcutaneous tissue and ensure it is fully deposited. The standard technique is to insert the needle at a 90-degree angle for most adults, then hold the needle in place for about 5 seconds after depressing the plunger before withdrawing. This brief hold helps ensure the entire prescribed dose enters the tissue and minimizes insulin leakage along the needle track.

The other approaches are less appropriate because a 45-degree angle is typically reserved for very thin individuals, not the general adult population, and withdrawing immediately after injecting can lead to incomplete dosing and leakage. An angle like 70 degrees is not a standard recommendation for insulin pens.