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[Capillary blood sample for type 2 diabetes screening: fingertip versus forearm]
Francisco Javier Cuevas Fernández1, María José Iglesias Girón, Ignacio Llorente Gómez de Segura
1Centro de Salud Barrio de la Salud, Santa Cruz de Tenerife, Tenerife, Spain. fcojcuev@teleline.es
Medicina Clinica
|July 28, 2004
Summary
Choosing the best fingertip or forearm puncture site for diabetes screening depends on the specific blood glucose meter cut-off value used. This study compared both methods to improve diagnostic accessibility.
Area of Science:
- Endocrinology
- Clinical Diagnostics
Background:
- Undiagnosed diabetes mellitus (DM) affects approximately 50% of cases in Spain.
- Capillary blood glucose monitoring offers improved accessibility for diabetes screening.
Purpose of the Study:
- To compare fingertip and forearm capillary blood glucose determinations for diabetes screening.
- To identify the optimal anatomic site for capillary blood collection based on diagnostic criteria.
Main Methods:
- A comparative study involving 107 patients.
- Analysis of capillary blood glucose levels obtained from both fingertip and forearm punctures.
Main Results:
- A 110 mg/dl cut-off for fingertip and 125 mg/dl for forearm demonstrated higher sensitivity.
- Patient preference showed 67% indifference, 28% favored forearm, and 5% favored fingertip.
Conclusions:
- The optimal anatomic site for capillary blood puncture in diabetes screening is contingent upon the chosen cut-off value.
- Site selection should consider both sensitivity and patient preference for effective screening.