Order the following insulin types from the shortest to longest onset of action.

The correct order from shortest to longest onset of action for the listed insulin types is indeed Lispro, Regular, NPH, and Levemir.

Lispro is a rapid-acting insulin that typically begins to work within 15 minutes after injection, allowing for quick control of blood glucose levels after eating. It is specifically formulated to facilitate more rapid absorption in the bloodstream.

Regular insulin, also known as short-acting insulin, generally has an onset of action that occurs around 30 minutes after administration. While it is not as fast-acting as Lispro, it is still faster than intermediate or long-acting insulins.

NPH (Neutral Protamine Hagedorn) insulin is classified as an intermediate-acting insulin. Its onset is usually around 1 to 2 hours after injection, which aligns with its slower absorption and longer duration of action compared to Regular insulin.

Finally, Levemir, a long-acting insulin, has a delayed onset of action, typically starting to work within 1 to 2 hours but providing a more prolonged effect, lasting up to 24 hours.

Understanding these pharmacokinetic properties helps in managing diabetes effectively, as the onset of action of different insulins influences the timing of administration