Owner’s Manual
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Blood Glucose Meter AutoCode
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Blood Glucose Meter
63
• Never use your meter with blood that has been
collected in a gray top test tube.
• Use fresh capillary blood only.
You may still have a variation from the result because
blood glucose levels can change signicantly over short
periods, especially if you have recently eaten, exercised,
taken medication or experienced stress.¹ In addition, if
you have eaten recently, the blood glucose level from a
nger stick can be up to 70 mg/dL (3.9 mmol/L) higher
than blood drawn from a vein (venous sample) used for
a lab test.²
Therefore, it is best to fast eight (8) hours before
doing comparison tests. Factors such as the amount of
red blood cells in the blood (a high or low hematocrit)
or the loss of bodily uids (severe dehydration) may also
cause a meter result to be different from a laboratory
result.
References: ¹Surwit, R.S., and Feinglos, M.N.: Diabetes Fore-
cast (1988), April, 49-51. ²Sacks, D.B:“Carbohydrates.” Bur-
tis, C.A, and Ashwood, E.R. (ed.), Tietz Textbook of Clinical
Chemistry. Philadelphia: W.B. Saunders Company (1994),
959.