Which of the following types of insulin is typically clear and used regularly for glycemic control?

The correct response is based on the characteristic properties of different types of insulin. Short-acting insulin is designed to be used for rapid control of blood glucose levels and is typically clear in appearance. This type of insulin begins to work within 30 minutes after injection, peaks in about 2 to 3 hours, and continues to be effective for 3 to 6 hours.

In contrast, long-acting insulin is formulated to provide a steady release of insulin over an extended period, leading to a longer duration of action without pronounced peaks. This type of insulin can also appear clear.

Intermediate-acting insulin, on the other hand, is often cloudy due to the addition of other substances that prolong its action. This insulin takes longer to start working and has a different peak and duration profile compared to short-acting insulin.

Mixtures of insulin typically contain both short-acting and intermediate-acting components, which can lead to a cloudy appearance as well.

The clarity of short-acting insulin is a distinguishing feature, making it particularly useful for patients requiring quick and predictable control over their blood sugar levels. This is why short-acting insulin is commonly chosen for regular use in managing glycemic control.