Comparing Monitor and Laboratory Results
The monitor provides you with plasma equivalent results. The result
you obtain from your monitor may differ somewhat from your labora-
tory result due to normal variation. Monitor results can be
affected by factors and conditions that do not affect laboratory results
in the same way. To make an accurate comparison between monitor
and laboratory results, follow the guidelines below.
Before going to the lab:
• Perform a control solution test to make sure that the monitor is
working properly.
• Fast for at least eight hours before doing comparison tests,
if possible.
• Take your monitor 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 monitor with blood that has been collected in a
gray-top test tube.
• Use fresh capillary blood only.
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