thanks all. I did panic a bit. Had a satsuma and an apple just in case but I was feeling fine.
I seen the replies, washed hands and tested again. Was 4.9.
Completely new to it all. Had a HBA1C of 81 last month and it frightened me a bit. I've been attempting to eat a lot better which after years of abusing my body has not been easy. I will test HBA1C again in a few months but got a finger prick monitor as I was interested to see what it was saying on a daily basis.
That's good. Meters have an allowable inaccuracy of 5%, 95% of the time - so a true value of 5 mmol/l could be given as anything in the approximate range 4.7 to 5.3. Don't get hung up on small differences.
I'd recommend keeping a diary of your test results and times for testing along with food eaten and any other relevant factors - eg exercise, illness, stres etc. The usual pattern is to test immediately before eating to establish a baseline, and then test again two hours later. You're not testing to see how high you go.
The second test result should therefore be showing you how well (or otherwise) your system worked in returning you to where you started from. A rise in blood glucose is perfectly normal and to be expected after eating carb, even in small quantity, for both diabetics and non-diabetics. What should be happening is that at the two hour mark your insulin response should have cleared away most if not all of the glucose produced (into muscle, liver, or fat storage), so you should be close to where you started from. The target is usually to be a) within 2mmol/l of the starting value and b) not above 8.5 (I use 7.8, the non-diabetic target myself).
I know from using a constant glucose monitor that one small latte will take me from 5.2 starting to 9.6 30 minutes after drinking it - but I'll be back to 5.2 by 60 minutes. As long as your system can deal with the glucose level, you're on the right track.
This forum has helped me a lot, and still continues to provide useful support and information. Read around a bit - have a look at the Success Stories section - and ask as many questions as you want.