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# ALTERNATIVE SITE TESTING (AST)
Contact your healthcare professional before you begin using anyone of these
alternative sites to test your blood glucose.
1. Alternative site results may be different from fingertip results when glucose
levels are changing rapidly (e.g., after a meal, after taking insulin, or during or
after exercise).
2. Use alternative site testing only two hours or more after taking insulin, two
hours or more after a meal, two hours or more after exercise.
3. Do not use alternative site testing if you are pregnant, or if you are aware that
your glucose level is not as stable as usual, or if you think you have
hypoglycemia (low blood sugar) or hyperglycemia (high blood sugar), or at
times when you think your blood glucose may be rising or falling rapidly.
4. Do not use alternative site testing if your alternative site testing results do not
match the way you feel.
