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Related Experiment Videos

Alternative site blood glucose testing: a multicenter study.

D Fedele1, A Corsi, C Noacco

  • 1Diabetes Centre, Padova, Italy.

Diabetes Technology & Therapeutics
|January 8, 2004
PubMed
Summary
This summary is machine-generated.

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Forearm blood glucose (BG) testing is feasible and reliable for people with diabetes using a small blood sample. However, fingertip testing remains recommended for accurately detecting hypoglycemia.

Area of Science:

  • Endocrinology
  • Medical Devices
  • Diabetes Management

Background:

  • Blood glucose (BG) monitoring is crucial for diabetes management.
  • Traditional BG testing uses fingertip capillary blood samples.
  • Alternative site testing (AST) aims to reduce pain and improve patient experience.

Purpose of the Study:

  • To compare BG measurements from fingertip versus forearm using the One Touch Ultra system.
  • To assess patient experience and preference for AST.
  • To evaluate the reliability and accuracy of forearm BG readings.

Main Methods:

  • 112 patients with type 1 or type 2 diabetes participated.
  • Participants used the One Touch Ultra BG monitoring system at home for 1 week, testing both fingertip and forearm sites.

Related Experiment Videos

  • Data analysis included linear regression, mean absolute relative error (MARE), Bland-Altman analysis, and Error Grid Analysis (EGA).
  • Patient questionnaires assessed pain, blood sample collection, and site preference.

    • Main Results:

    • Linear regression showed a strong correlation (Pearson r=0.95) between fingertip and forearm readings.
    • Mean absolute relative error (MARE) was 12.1%, with higher deviations in the hypoglycemic range (22.3%).
    • Error Grid Analysis (EGA) indicated 89.2% of readings in Zone A (clinically accurate).
    • 71% of patients reported less pain with forearm testing, and 32% preferred it.
    • Hypoglycemic range readings showed greater variability from the forearm.

    Conclusions:

    • Alternative site testing on the forearm is feasible and reliable for routine BG monitoring with a low-volume blood sample.
    • Fingertip testing is still recommended for accurately detecting hypoglycemia due to greater variability in forearm readings.
    • AST offers a less painful and preferred testing option for many individuals with diabetes.