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Science Fair Report
by Eric Charles Seaman

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:

• Four different blood sugar meters and test strips
  Dex, AccuChek, FreeStyle, and One Touch meters
• One finger poker to get blood samples
• Logbook to record test results for each meter
• Results of two separate blood tests called an A1c test

Procedure:

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

Date	Dex	AccuChek	One Touch	FreeStyle
3/10/01 PM	107	113	140	135
3/11/01 AM	141	167	165	182
3/11/01 PM	194	232	226	257
3/12/01 AM	144	155	220	167
3/12/01 PM	94	103	117	107
3/13/01 AM	206	208	221	223
3/13/01 PM	184	201	194	204
3/14/01 AM	145	181	172	168
3/14/01 PM	128	142	171	147
3/15/01 AM	75	91	88	99
3/15/01 PM	69	78	65	82
3/16/01 AM	127	142	144	136
3/16/01 PM	61	63	58	84
3/17/01 AM	157	170	180	181
3/17/01 PM	88	102	122	123
3/18/01 AM	131	140	144	178
3/18/01 PM	232	242	307	272
3/19/01 AM	192	209	278	209
Total	2475	2739	3012	2954
Average	137.5	152.2	167.3	164.1
A1c	7.6	8.5	9.3	9.1

Published 7 May 2001

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