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Updated: Jul 3, 2026

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19
Published on: July 5, 2022
Screening for type 2 diabetes in primary care using a stepwise protocol: the Diabscreen study
Erwin P Klein Woolthuis1, Wim J C de Grauw, Willem H E M van Gerwen
1Department of General Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. e.kleinwoolthuis@hag.umcn.nl
Aim:
To evaluate a stepwise protocol in opportunistic screening for type 2 diabetes.
Methods:
From 2000 to 2001, in 11 Dutch general practices (n=49,229) we invited at-risk patients during usual care for a capillary fasting plasma glucose (cFPG1) measurement. If >6.0 mmol/l, a second sample (cFPG2) was taken on another day, followed by a venous sample (vFPG) if cFPG2>6.0 mmol/l and cFPG1 or 2> or =7.0 mmol/l.
Results:
Of 3724 at-risk patients invited for a cFPG1, 3335 (90%) returned for the measurement. Ultimately, in 125 (4%) of them a vFPG was measured. In 101 out of 125 patients the vFPG was > or =7.0 mmol/l, giving a positive predictive value of our protocol of 81%.
Conclusion:
A stepwise screening protocol including two subsequent capillary blood glucose measurements from a portable blood glucose meter is well applicable in screening for type 2 diabetes in primary care.
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