Final answer:
Rapid-acting insulin such as aspart, lispro, and glulisine peaks within 1-2 hours after injection.
Step-by-step explanation:
Rapid-acting insulin peaks at different times depending on the type of insulin used. Insulin aspart (Novolog), insulin lispro (Humalog), and insulin glulisine (Apidra) are examples of rapid-acting insulins. These insulins typically peak within 1-2 hours after injection. When discussing the peak of rapid-acting insulin types such as aspart, lispro, and glulisine, we are referring to the point at which these insulins have their highest blood glucose-lowering effect. After injection, rapid-acting insulin usually starts to work within 15 minutes, reaches its peak action in 1 to 2 hours, and continues to work for 4 to 6 hours. This type of insulin is often used just before a meal to manage the rise in blood glucose that comes from eating. Insulin, a polypeptide hormone with molecular weight 5734 Da, has a crucial role in glucose metabolism. It is synthesized from preproinsulin, which becomes proinsulin and subsequently has its 'C' chain cleaved off to form the active hormone. This active form, consisting of an 'A' chain with 21 amino acids and a 'B' chain with 30 amino acids, facilitates the transport and storage of glucose, to ensure cells can use glucose as an energy source.