Comparison of fingerprick blood glucose levels and continuous glucose monitoring to assess high and low blood sugar levels in hospitalized patients treated with basal bolus insulin.

Determine whether 4 fingerprick capillary blood glucose levels taken at routine sampling times of 0700, 1200, 1700 and 2100 hours over a 24 hour period during a hospital admission, as measured by standard hospital ward glucometers, accurately reflects glucose concentrations determined by continuous glucose monitoring. The duration of sampling will be up to 2 full consecutive days with a minimum of one full day (midnight to midnight). This will be in a population of known diabetic patients receiving the standard basal bolus insulin regimen, which is used for patients requiring temporary intensified blood glucose management during admission. Patient recruitment is planned until August 2012.