If the test strips are expired by a month or two, are they still "relatively" accurate? I checked them against the control solution and they seem to be within the control solution.
I check one or two strips against unexpired one. The expired ones do not vary any more than the unexpired ones (10-20%). For detecting trend after a meal, I think it's "safe". I'm not trying to correct for hypo or basing the numbers to figure out insulin correction factors.
What has been everyone's experience in terms of test strip or glucometer variabilities?