a patient is prescribed novolog 10units subQ tid. how long will one vial of insulin last?

It depends on the size of the vial. NovoLog is available in 10 mL vials, with each mL containing 100 units of insulin. Therefore, each vial contains 1000 units of insulin.

If the patient is using 10 units three times daily, they are using a total of 30 units per day. One vial would last for 33.3 days (1000 units divided by 30 units per day). However, it is important to note that insulin vials once opened should be used within 28 days.