Generally speaking, blood glucose can be measured by collecting fingertip blood or venous blood, and all the collected blood should be tested under professional blood glucose instruments. Measuring blood glucose means measuring the glucose content in the blood, so measuring blood glucose generally requires blood collection. If you are measuring yourself at home, you generally choose to collect blood from your fingertips, extract the blood with a professional blood collection needle, and then use a blood glucose test strip to collect the blood and then enter the instrument for measurement. You can also be tested by a professional doctor in a hospital after blood is collected from a vein. It should be noted that blood glucose can be measured once during fasting, then once one hour after meal and once two hours after meal for blood glucose reference. It is recommended that people who need to measure blood glucose, under the guidance of a doctor to reasonably regulate the measurement of blood glucose value.