Fora TN'G Manual Del Propietário página 35

make an accurate comparison between meter and laboratory results,
follow the guidelines below.
Before going to the lab:
● Perform a control solution test to make sure that the meter is working
properly.
● Fast for at least eight hours before doing comparison tests, if possible.
● Take your meter with you to the lab.
While staying at the lab:
Make sure that the samples for both tests are taken and tested within 15
minutes of each other.
● Wash your hands before obtaining a blood sample.
● 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 significantly over short periods of time, especially if
you have recently eaten , exercised, taken medication, or experienced
stress . In addition, if you have eaten recently, the blood glucose
*2
level from a finger prick 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
Therefore, it is best to fast for eight 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 body fluid (dehydration) may also cause a meter
result to be different from a laboratory result.
References:
*2: Surwit, R.S., and Feinglos, M.N.: Diabetes Forecast (1988), April, 49-51.
*3: Sacks, D.B.: Carbohydrates. Burtis, C.A., and Ashwood, E.R. (ed.), Tietz
Textbook of Clinical Chemistry. Philadelphia: W.B. Saunders Company (1994), 959.
.
*3
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