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A high blood sugar reading on your glucometer may not always indicate truly elevated blood glucose. Several factors can cause falsely high readings, including:

- Residue or sugar on unwashed hands
- Testing too soon after eating (especially carb-heavy meals)
- Low meter battery
- Extreme temperature exposure of testing Show Full Answer

A high blood sugar reading on your glucometer may not always indicate truly elevated blood glucose. Several factors can cause falsely high readings, including:

- Residue or sugar on unwashed hands
- Testing too soon after eating (especially carb-heavy meals)
- Low meter battery
- Extreme temperature exposure of testing supplies
- Squeezing finger too hard when getting blood sample To ensure accurate readings:
- Always wash and dry hands thoroughly before testing
- Test 1-2 hours after meals as recommended
- Check meter battery regularly
- Store supplies at room temperature
- Let blood flow naturally without excessive squeezing
- Use adequate blood sample size

If you get unexpected high readings, it's best to retest and contact your healthcare provider if readings remain elevated.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

10 Potential Causes of a False High Blood Sugar Reading