The correct method for measuring blood glucose using a finger prick
Disease description:
Under normal circumstances, blood glucose levels are measured using blood obtained from the fingertip. I would like to learn the correct method for collecting blood from the fingertip to measure blood glucose.
Doctor's answer (1)
Dr. Yang Ziqi
Collecting fingertip blood to measure blood glucose is a common method for diabetic patients to monitor their blood glucose levels daily. The correct procedure is as follows:
1. Preparation:
Check the blood glucose meter and test strips to ensure the meter's code matches the test strip batch number.
Wipe the fingertip with an alcohol swab and wait until the alcohol has completely evaporated before proceeding. Avoid using iodine, as it may affect the accuracy of the blood glucose test results.
2. Blood Collection:
Gently touch the side of the fingertip with the lancet (avoiding the center of the fingertip). Press the button to quickly puncture the skin, then immediately squeeze both sides of the finger to allow blood to flow naturally. Do not press too hard, as this may cause interstitial fluid to mix with the blood and affect the accuracy.
3. Waiting and Stopping the Bleeding:
Place the test strip flat and wait for the blood glucose result.
Press the puncture site with a clean cotton ball to stop the bleeding.
4. Precautions:
It is best to perform the blood glucose test while fasting to ensure accuracy.
Do not squeeze the finger before collecting blood, as this may dilute the blood and lead to a lower reading.
If the same finger is used repeatedly for blood collection over a long period, it is important to keep the fingers moisturized to prevent skin aging.
Following these steps can help ensure the accuracy and safety of blood glucose measurements.
