title: Accuracy of a Novel Non-Invasive technology based EZSCAN system for the diagnosis of diabetes mellitus in Chinese.
abstract: BACKGROUND
  A new simple technique based on iontophoresis technology (EZSCAN, Impeto Medical, Paris, France) has recently been developed for the screening of diabetes. In the present study, we investigated the accuracy of this system for the diagnosis of diabetes mellitus in Chinese.
  
  
  METHODS
  We performed the EZSCAN test in diabetic and non-diabetic subjects. EZSCAN measures electrochemical conductance (EC) at forehead, hands and feet, and derives a diabetes index with a value ranging from 0 to 100. Diabetes mellitus was defined as a plasma glucose concentration of at least 7 mmol/l at fasting or 11.1 mmol/l at 2 hours after glucose load, or as the use of antidiabetic drugs.
  
  
  RESULTS
  The 195 study participants (51% men, mean age 52 years) included 75 diabetic patients (use of antidiabetic drugs 81%) and 120 non-diabetic subjects. EC (micro Siemens, μSi) was significantly (P < 0.001) lower in diabetic patients at the hands (44 vs. 61) and feet (51 vs. 69) locations, but not at the forehead (15 vs. 17, P = 0.39). When a diabetes index of 40 (suggested by the manufacturer) was used as the threshold, the sensitivity and specificity for the diagnosis of diabetes mellitus was 85% and 64%, respectively. In 80 patients who underwent an oral glucose tolerance test, EC at hands and feet and the diabetes index were significantly (P < 0.001) associated with both 2-hour post-load plasma glucose and serum glycosylated haemoglobin.
  
  
  CONCLUSIONS
  EZSCAN might be useful in screening diabetes mellitus with reasonable sensitivity and specificity.
authors.affiliation: Centre for Epidemiological Studies and Clinical Trials, The Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China. jiguangw@gmail.com.
authors.forename: Chang-Sheng
authors.initials: CS
authors.lastname: Sheng
authors.forename: Wei-Fang
authors.initials: WF
authors.lastname: Zeng
authors.forename: Qi-Fang
authors.initials: QF
authors.lastname: Huang
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Deslypere
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Ji-Guang
authors.initials: JG
authors.lastname: Wang