Diabetes Care, Vol 22, Issue 10 1708-1714, Copyright © 1999 by American Diabetes Association

ARTICLES

Correlation of fingerstick blood glucose measurements with GlucoWatch biographer glucose results in young subjects with type 1 diabetes

SK Garg, RO Potts, NR Ackerman, SJ Fermi, JA Tamada and HP Chase
Department of Pediatrics, Barbara Davis Center for Childhood Diabetes, University of Colorado Health Sciences Center, Denver 80262, USA. satish.garg@uchsc.edu

OBJECTIVE: The purpose of this study was to compare measurements of glucose obtained via iontophoretic extraction with the GlucoWatch automatic glucose biographer (Cygnus, Inc., Redwood City, CA) with capillary blood glucose values that were determined 1) in a controlled outpatient clinic setting and 2) in a home setting. RESEARCH DESIGN AND METHODS: There were 76 GlucoWatch biographers used on 28 different young adults (21 women and 7 men) with type 1 diabetes (age 30.9 +/- 6.9 years and duration of diabetes 18.4 +/- 8.1 years [mean +/- SD]) in a controlled outpatient clinic setting. Some subjects participated on multiple days. Subjects wore two GlucoWatch biographers, each on the forearm (ventral aspect). Comparisons were made to HemoCue blood glucose analyzer (Aktiebolgat Leo, Helsingborg, Sweden) capillary blood glucose measurements. In addition, GlucoWatch biographers (one each day for 3 consecutive days) were used by 12 subjects (8 women, 4 men) in a home setting. Comparisons were made to capillary blood glucose values determined using the One Touch Profile meter (Johnson & Johnson, New Brunswick, NJ). RESULTS: GlucoWatch biographer glucose values correlated well with capillary blood glucose values determined using the HemoCue analyzer in the clinic setting (r = 0.90, 1,554 paired data points) and using the One Touch Profile meter in the home setting (r = 0.85, 204 paired data points). When 36 subjects wore two biographers simultaneously, the correlation between the two biographers was r = 0.94. The error grid analysis demonstrated that > 96% of biographer glucose values determined in the clinic or home setting were in the clinically acceptable A and B regions. CONCLUSIONS: This study confirms the accuracy and precision of glucose values as determined using the GlucoWatch biographer in clinic and home settings.
CiteULike    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				T. C. Dunn, R. C. Eastman, and J. A. Tamada Rates of Glucose Change Measured by Blood Glucose Meter and the GlucoWatch Biographer During Day, Night, and Around Mealtimes Diabetes Care, September 1, 2004; 27(9): 2161 - 2165. [Abstract] [Full Text] [PDF]

				Accuracy of the GlucoWatch G2 Biographer and the Continuous Glucose Monitoring System During Hypoglycemia: Experience of the Diabetes Research in Children Network Diabetes Care, March 1, 2004; 27(3): 722 - 726. [Abstract] [Full Text] [PDF]

				A. L. Briggs and S. Cornell Self-monitoring Blood Glucose (SMBG): Now and the Future Journal of Pharmacy Practice, February 1, 2004; 17(1): 29 - 38. [Abstract] [PDF]

				L. M. Gandrud, H. U. Paguntalan, M. M. Van Wyhe, B. L. Kunselman, A. D. Leptien, D. M. Wilson, R. C. Eastman, and B. A. Buckingham Use of the Cygnus GlucoWatch Biographer at a Diabetes Camp Pediatrics, January 1, 2004; 113(1): 108 - 111. [Abstract] [Full Text] [PDF]

				D. Iafusco, M. K. Errico, C. Gemma, F. Prisco, and R. C. Eastman Usefulness or Uselessness of GlucoWatch in Monitoring Hypoglycemia in Children and Adolescents Pediatrics, January 1, 2004; 113(1): 175 - 176. [Full Text] [PDF]

				E. Kulcu, J. A. Tamada, G. Reach, R. O. Potts, and M. J. Lesho Physiological Differences Between Interstitial Glucose and Blood Glucose Measured in Human Subjects Diabetes Care, August 1, 2003; 26(8): 2405 - 2409. [Abstract] [Full Text] [PDF]

				H. P. Chase, M. D. Roberts, C. Wightman, G. Klingensmith, S. K. Garg, M. Van Wyhe, S. Desai, W. Harper, M. Lopatin, M. Bartkowiak, et al. Use of the GlucoWatch Biographer in Children With Type 1 Diabetes Pediatrics, April 1, 2003; 111(4): 790 - 794. [Abstract] [Full Text] [PDF]

				B. Guerci, M. Floriot, P. Bohme, D. Durain, M. Benichou, S. Jellimann, and P. Drouin Clinical Performance of CGMS in Type 1 Diabetic Patients Treated by Continuous Subcutaneous Insulin Infusion Using Insulin Analogs Diabetes Care, March 1, 2003; 26(3): 582 - 589. [Abstract] [Full Text] [PDF]

				M. Metzger, G. Leibowitz, J. Wainstein, B. Glaser, and I. Raz Reproducibility of Glucose Measurements Using the Glucose Sensor Diabetes Care, July 1, 2002; 25(7): 1185 - 1191. [Abstract] [Full Text] [PDF]

				D. B. Sacks, D. E. Bruns, D. E. Goldstein, N. K. Maclaren, J. M. McDonald, and M. Parrott Guidelines and Recommendations for Laboratory Analysis in the Diagnosis and Management of Diabetes Mellitus Clin. Chem., March 1, 2002; 48(3): 436 - 472. [Abstract] [Full Text] [PDF]

				G. Reach Which Threshold to Detect Hypoglycemia?: Value of receiver-operator curve analysis to find a compromise between sensitivity and specificity Diabetes Care, May 1, 2001; 24(5): 803 - 804. [Full Text]

				K. R. Pitzer, S. Desai, T. Dunn, S. Edelman, Y. Jayalakshmi, J. Kennedy, J. A. Tamada, and R. O. Potts Detection of Hypoglycemia With the GlucoWatch Biographer Diabetes Care, May 1, 2001; 24(5): 881 - 885. [Abstract] [Full Text]

				The Role of Frequent Glucose Monitoring in Intensive Diabetes Management The Diabetes Educator, March 1, 2001; 27(2_suppl): 3 - 17. [PDF]

				H. P. Chase, L. M. Kim, S. L. Owen, T. A. MacKenzie, G. J. Klingensmith, R. Murtfeldt, and S. K. Garg Continuous Subcutaneous Glucose Monitoring in Children With Type 1 Diabetes Pediatrics, February 1, 2001; 107(2): 222 - 226. [Abstract] [Full Text]