Two things about the blood glucose meters your crews are using;- 1. They are extremely limited in their performance outside of any environment other than in a home setting of a well diabetic. In a critical care situation or even a moderately sick patient, the result becomes influenced by other clinical factors such as haematocrit and tissue perfusion. This leads to misinterpretation and ultimately mis diagnosis and erroneous treatment 2. However, many studies state user bias of visually interpreted strips is even worse. You must have a chief medical officer endorsing this decision - or face ending up on the receiving end of an MHRA inquiry if it goes wrong. The majority of hazard warnings from point of care testing come from misuse of blood glucose testing equipment.