I had an interesting experience yesterday - 2 hours after my lunch (chicken salad) I did a test on my right hand and got 6.0. Too high (for me on Atkins - otherwise quite respectable). So I immediately licked and dried a left-hand finger, tested again - 4.6. Which is about what I would expect.
I'm left-handed. My right hand holds the peppers, tomatoes etc while I slice with the other. I didn't wash my hands before testing. I think it must have been the residual juice from the toms and red pepper that contaminated my reading - I've never had that happen before, so interesting to see it for the first time.
I've been back on Atkins since Monday, after an undisciplined 2 weeks, and since Tuesday morning I haven't had a reading above 5.4.
Viv 8)