The active insulin time is the duration that insulin remains effective in your body, typically around three hours. This means the impact of rapid-acting insulin lasts for up to three hours after injection or bolus.
According to the Rio Tinto Children's Diabetes Centre, active insulin time refers to how long insulin works in your body. It's usually set at three hours, meaning that the impact lasts up to three hours after your injection or bolus of rapid-acting insulin. (What is active insulin time? - Rio Tinto Children's Diabetes Centre diabetes.thekids.org.au › news-and-events › what-is-active-insulin-time)
