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28
Chapter 2
Control Solution Results
When the control test result falls within the
control range, the meter has passed the QC
check and can be used to test patient blood.
If the result falls outside the expected range,
repeat the test. Results that fall outside the
expected range may indicate:
• procedural error
• control solution is expired, contaminated,
beyond its discard date, or inadequately
mixed
• code number in meter does not match
code number on test strip bottle
• dirty meter or test strip holder
• problem with test strip (expired,
damaged, etc)
• control solution testing temperature
outside the range of 18°–30°C (64°–86°F)
• too much or too little control solution
applied to test strip
SSHosp.book Page 28 Thursday, November 14, 2002 3:44 PM