The Postprandial Hypo-Avoid Study

Inclusion Criteria: * Age ≥ 18 years * Type 1 diabetes ≥ 2 years * Using an automated insulin delivery system for ≥ 3 months * NovoRapid or Fiasp use ≥1 week * Proficiency in carbohydrate counting Exclusion Criteria: * Allergies to lactose or glucagon * Known or suspected allergies to glucagon or related products * History of hypersensitivity or allergic reaction to glucagon or lactose * Patients with diagnosed pheochromocytoma, insulinoma or gastroparesis * Concomitant medical or psychological conditions identified through review of medical history, physical examination and clinical laboratory analysis that, according to the investigator's assessment, makes the individual unsuitable for study participation * Lack of compliance with key study procedures at the discretion of the investigator * Females of childbearing potential who are pregnant, breast-feeding or intend to become pregnant or are not using adequate contraceptive methods (methods are considered adequate for study enrolment for females: an intrauterine device, hormonal contraception (birth control pills, implant, patch, vaginal ring or injection), a single partner who is sterile or infertile, or sexual abstinence. Contraception is required throughout the study duration. Sterilized or postmenopausal women (\>12 months since last period) are not required to use contraception) * Inability to understand the individual information and to give informed consent