Advise the Security Officer if you are experiencing low blood sugar and are in need of medical assistance.
You have the option of requesting a visual inspection of your insulin and diabetes associated supplies. See the Medication section below for details."
7) And at Travelers with Disabilities and Medical Conditions it's specifically stated that it's okay to bring "Gels or frozen liquids needed to cool disability or medically related items used by persons with disabilities or medical conditions" (like for your insulin or Byetta).
If you have other hints to share, let us all know!