There are a couple of different types of insulin that can be prescribed for someone with type 2 diabetes:
- rapid acting and longer acting taken separately
- mixed insulin where the rapid and longer acting are mixed together.
Regardless of the type the rapid acting insulin will start working in 10-15 minutes.
After eating carbohydrate foods we get a nearly immediate rise in blood glucose levels so by waiting for 30 minutes you will have let your blood glucose levels rise quite significantly already. The time for glucose levels to peak after eating is usually 1 hour before it then starts to go down - hopefully to pre-meal levels.
Usually the decision of how much insulin to inject is based on the pre-meal blood glucose reading rather than 30 minutes after the meal, in this way the insulin can start acting on the rise in blood glucose levels soon after you eat and prevent the blood glucose levels after the meal from getting too high.
It sounds like you are really thinking about how best to manage your type 2 diabetes which is great. Having a chat with a diabetes educator about your management is a really good place to start - a team approach works best here - with you in charge.
Report this post
You must be a HealthShare member to report this post.
to your account or
now (it's free).