What is the primary method of insulin administration?

The primary method of insulin administration is through subcutaneous injections. This route allows insulin to be absorbed into the bloodstream steadily, providing a controlled and effective way to manage blood glucose levels. Subcutaneous injections are typically administered in areas with a sufficient fatty tissue layer, such as the abdomen, thigh, or upper arm.

This method of delivery is preferred because it mimics the body's natural secretion of insulin and enables patients to self-administer insulin easily, using pens or syringes. Additionally, subcutaneous delivery allows insulin to have a more prolonged effect compared to other administration routes, which is crucial for managing blood sugar levels in patients with diabetes.

While other options may involve insulin administration, such as intravenous infusion in certain acute settings or experimental oral tablets that are not commonly used, they do not serve as the standard method for daily diabetes management.