I have been testing for about three weeks and keeping a diary of the results for the nurse who I see on Monday. She told me to keep within the range of 5 to 9 and mostly I have managed to keep between 5 and 7. However I have just tested (after lunch) and it was 4.9 which I find confusing. I had my usual breakfast, not much exercise and a good lunch of three vegetarian sausages, some quinoa, two tomatoes and some celery. I also ate two pears, one at coffee time and one after lunch so I definitely wasn't expecting such a low reading.