NURSE ROSIE RealTime Manual Del Propietário página 41

● 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 or venous 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 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
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
* : Surwit, R.S., and Feinglos, M.N.: Diabetes Forecast (1988), April, 49-
2
51.
* : Sacks, D.B.: Carbohydrates. Burtis, C.A., and Ashwood, E.R.
3
( ed.), Tietz Textbook of Clinical Chemistry. Philadelphia: W.B. Saunders
Company (1994), 959.
. Therefore, it is best
*3
.
*2
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