Fasting plasma glucose (FPG) levels are determined by taking a blood sample from participants who have fasted for at least 8 hours. It can be measured in mmol/L or in mg/dL. For comparability, these values are converted in mmol/L. Other related biomarkers, such as haemoglobin A1c (HbA1c), can be used to help calculate national estimates.
M&E Framework: Sugar Fasting
For a fasting blood sugar test, do not eat or drink anything other than water for at least 8 hours before the blood sample is taken. If you have diabetes, you may be asked to wait until you have had your blood tested before you take your morning dose of insulin or diabetes medicine. Sugar Fasting