To make this informed decision, you have to collate some information to support the analysis - its all ancient history now. The pack inserts of all glucose test strips list a whole host of limitations, which "my cause an erroneous reading". If you list these against the sick patient you just picked up, who may well be afflicted by more than one of these, then you will start to doubt the accuracy of the BG you you just documented. Every device/strip combo used to be evaluated by th MHRA and have its own report and they did a thorough job of pulling these limitations out. However, the device evaluation bit has been handed off to PASA and the evaluations have been taken off line! The evaluations used to be done by the Wolfson Applied Technology Laboratory at Birmingham Uni. - they still do them for PASA today. They might be able to get you copies.