Inclusion Criteria:  The subject has a serum protein A1C of less than 6. The subject is willing and able to read, understand the Subject Information Sheet and provide written informed consent. The subject has a body mass index (BMI) within 18-50 kg/m2. The subject is in otherwise good health as determined by medical history and physical examination. The subject is a non-smoker. The subject must agree to continue with daily serum glucose testing by means of a wearable blood glucose for the pharmacokinetic assessments. The subject is willing and able to comply with all testing and requirements defined in the protocol. The subject is willing and able to return to the study site for all visits.  Exclusion Criteria:  The subject has any relevant deviations from normal other than blood glucose in physical examination, electrocardiogram (ECG), or clinical laboratory tests, as evaluated by the investigator. The subject has had a clinically significant illness within 30 days preceding entry into this study. The subject has a history of significant neurological, hepatic, renal, endocrine, cardiovascular, gastrointestinal, pulmonary, or metabolic disease. The subject has a known allergy or history of hypersensitivity to Human Insulin or similar modified Insulin compounds. The subject has used any prescription medication that may interfere with the evaluation of study medication. The subject has donated or lost a significant volume of blood (>450 mL) within four (4) weeks of the study, and their Haemoglobin concentration and haematocrit have not returned to within 5% of normal. The subject has a history of substance abuse or a current positive urine drug screen or urine alcohol test. Alcohol consumption greater than community norms (i.e. more than 21 standard drinks per week for males). Subjects who have received an investigational drug or have used an investigational device in the 30 days prior to study entry