Blood glucose testing methods include venous blood sampling and peripheral blood sampling with a home blood glucose meter. Before venous blood sampling, you need to make good dietary preparations and standardize the process of performing a glucose tolerance test; when testing blood glucose with a blood glucose meter, you need to standardize the operating procedures, which can help improve the accuracy of blood glucose test results, and it is recommended that you consult with your doctor.
Before the blood glucose test, if you are checking fasting blood glucose, you need to keep overnight fasting for 8~10 hours until the next morning for blood testing, and should not drink a lot of water before the test, which can improve the accuracy of the blood glucose test results.
If an oral glucose tolerance test is needed, the daily carbohydrate intake should be more than 150g for three days before the test, and venous blood should be drawn for blood glucose test at half an hour, one hour, two hours and three hours after taking glucose to ensure the accuracy of the time point, which can also improve the accuracy of the blood glucose test results.
In addition, if you are using a home blood glucose meter for blood glucose testing, you need to use blood glucose instruments produced by regular manufacturers and calibrate the meter on a regular basis.
If you are not sure about the precautions for blood glucose testing you can go to the hospital and consult a healthcare professional.