Diabetes – Insulin

Medical information to support a TUE application – Diabetes (Insulin)

Diabetes mellitus is a long-term endocrine disorder, characterised by high blood glucose levels resulting from absolute or relative insulin deficiency. Diagnosis can be made at any age.


Status of medication in sport

Insulin is prohibited both in-and out-of-competition. (Note: Oral antidiabetics such as metformin are NOT prohibited)


What information is required for a Therapeutic Use Exemption (TUE) application?

  • A completed TUE application form signed by the treating doctor and athlete.
  • Detailed typed clinical letter(s) from treating specialist(s) that includes:
    • diagnosis – summary of clinical history and examination leading to diagnosis
    • age of diagnosis and management to date
    • evidence of glucose control since diagnosis – HbA1C/Glucose levels, and
    • current treatment, including route of administration, dose and frequency of all medications.

NOTE: A clinical letter can be a copy of a specialist’s letter to another doctor (e.g. a GP), and at least one of the clinical letters submitted with the application must have been written in the last 12 months.

  • Supplementary reports (if available) that support the diagnosis, including:
    • blood test results – might include fasting glucose, HbA1C, Glucose tolerance test, and
    • documentation of control of diabetes – episodes of hypo or hyperglycaemia.


For additional information please refer to the medical information relating to the condition on the WADA website.