Which type of insulin can never be mixed with another types?

Explanation

Core Concept: Pharmacokinetics and safe administration of insulin analogs.

Clinical Presentation: Diabetes mellitus presenting with polyuria, polydipsia, polyphagia, and hyperglycemia.

Diagnosis: Fasting blood glucose, HbA1c, and random glucose levels.

Management: Long-acting insulins (e.g., Glargine/Lantus, Detemir) have an acidic pH or specific crystalline structures that precipitate in subcutaneous tissue to provide a steady, peakless basal release. They must never be mixed in the same syringe with other insulins, as mixing alters their pH and pharmacokinetic profile, which can cause unpredictable and dangerous hypoglycemia.