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Science Fair Report
by Eric Charles Seaman

photo My experiment is to compare blood sugar meters for accuracy.

Question: What did I want to find out?
Which blood sugar meter is most accurate in measuring blood sugar levels.

Hypothesis: What do I think?
I think the Dex blood sugar meter will be the most accurate because it only uses the plasma in blood to test for blood sugar but all the others use whole blood.

List of materials needed:


  1. I get a special blood test called an A1c at the doctor's office.
  2. When I first wake up each morning I poke my finger to get a blood sample.
  3. I put a drop of blood on the strips used in each meter and test my blood. I tested on all four meters.
  4. I record all four blood sugar readings in the logbook.
  5. I do the same thing (Steps 2-4) all over again each night before I go to bed.
  6. I test a total of eighteen times on each meter and then get another A1c test at the doctor's office.
  7. The meter whose A1c average is closest to the A1c tests that I had at the doctor's office would be the most accurate.

Results: What actually happened?
The Dex meter came closet to both of the A1c tests that I had at the doctor's office. My A1c's were 6.9% and 7.2%. The Dex had an average of 7.6%. The other meters averaged 8.5%, 9.1%, and 9.3% which isn't very close at all.

Conclusions: What did I learn?
I learned the Dex meter is the most accurate of all the meters that I tested. I'm happy that the Dex is the most accurate because I have been using a Dex meter to check my blood sugar for almost two years now.

Supporting Data

DateDexAccuChekOne TouchFreeStyle
3/10/01 PM107113140135
3/11/01 AM141167165182
3/11/01 PM194232226257
3/12/01 AM144155220167
3/12/01 PM94103117107
3/13/01 AM206208221223
3/13/01 PM184201194204
3/14/01 AM145181172168
3/14/01 PM128142171147
3/15/01 AM75918899
3/15/01 PM69786582
3/16/01 AM127142144136
3/16/01 PM61635884
3/17/01 AM157170180181
3/17/01 PM88102122123
3/18/01 AM131140144178
3/18/01 PM232242307272
3/19/01 AM192209278209

Published 7 May 2001

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Last Updated: Thursday August 29, 2002 21:02:12
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