Lifescan Ultra - Manual (Page 41)

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If your blood glucose test result is
above 600 mg/dL,
h1 will appear
on the meter display. This may
mean severe hyperglycemia
(high blood glucose). You
should recheck your blood
glucose level. If
h1 again
appears on the display, call
your healthcare professional
immediately.
When your blood glucose test result is
above 240 mg/dL or reads
h1,
“Ç” will appear on the meter
display. This message does not mean
that the system detected ketones but
that testing with a ketone test strip
may be advisable. Consult your
healthcare professional about when
and how to test for ketones.
Example
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