Screening for Type 2 Diabetes by Oral Glucose Tolerance Test in the Population Groups Not Diagnosed by Fasting Blood Glucose in Guadeloupe

o Inclusion criteria : Adult subject (over 18 years and under 65 years old) Subjects of African or Indian origin and self-declared Normal FBG levels (110mg/dL) HbA1c levels between 5.7 and 6.4% One or more of the following factors: BMI \> 25 kg/m2, family history of T2DM in the 1st and 2nd familial degree, hypertension, dyslipidemia. Affiliation to the national social health system or equivalent Informed and written consent signed by the patient and the investigator (at the latest on the day of inclusion and before the completion of any research related exam) o Exclusion criteria : Pregnant or lactating woman Women with a history of gestational diabetes Polycystic ovary syndrome Endocrine, hepatic or renal diseases affecting glycemic control Treatment that affect the metabolism of glucose or insulin Refusal to participate Subjects without adequate or impaired decisional abilities for consent to research and placed under guardianship, curatorship or safeguard of justice, person participating in another research including an exclusion period still in progress, severely impaired physical and / or psychological health, which, according to the investigator, may affect the compliance of the study participant