Final answer:
Insulin types sorted from slowest to longest onset of action are: NPH (slow), Regular (short-acting), Lispro (rapid-acting), and Levemir (long-acting).
Step-by-step explanation:
Sorting the types of insulin from the slowest to the longest onset of action, we would list them as follows:
- NPH (Neutral Protamine Hagedorn): This insulin has an onset of action typically between 1 to 3 hours.
- Regular (Short-acting insulin): Onset of action usually occurs within 30 minutes to an hour.
- Lispro (Rapid-acting insulin): This type of insulin begins to work approximately 15 minutes after injection.
- Levemir (Long-acting insulin): The onset of action for Levemir is generally about 1 to 2 hours after injection.
It should be noted that onset of action can vary among different individuals and under different circumstances, such as the site of injection, blood flow, and temperature.