Blood sugar was measured at the same time, but the blood sugar value was different. What is the reason? Because human blood sugar is affected by many factors (such as diet, exercise, sleep, mood, etc. ), it is always in constant change and sometimes even fluctuates greatly. In the same fasting state, the blood sugar values at 6: 00 am and 9: 00 am are different. Similarly, the blood glucose value of 1h after meals is different from that of 2 hours after meals.
Generally speaking, according to international regulations, the difference between the values of the same blood sample, the results of simultaneous detection by blood glucose meter or laboratory should be less than or equal to 20%. If it exceeds this range, it means that there may be quality problems in the blood glucose meter itself. But in most cases, the problem is not the blood glucose meter, but other reasons, such as specimen problems, improper operation, expired test paper and so on. Careful sugar lovers will find that the fasting blood glucose measured by blood glucose meter is usually lower than that measured by hospital laboratory, with a difference of about 12% ~ 15%. It should be noted that in postprandial state (such as eating), this is because there is no significant difference in blood glucose between capillary blood and venous blood in fasting state. However, after eating, the blood glucose level of capillary blood (roughly equivalent to arterial blood) is higher than that of venous blood, which needs attention.
If the blood glucose meter is often polluted by dust, sundries, etc. When placed or used, especially when blood accidentally pollutes the detection area of the instrument, it will affect the detection results. It is recommended to check, clean and calibrate the blood glucose meter regularly. Wipe the test area with a cotton swab or soft cloth dipped in water. Do not use alcohol or other organic solvents to avoid damaging the optical components of the machine.
Summary: Blood sugar is measured at the same time, but the blood sugar value is different. What is the reason? Because human blood sugar is affected by many factors (such as diet, exercise, sleep, mood, etc. ), it is always in constant change and sometimes even fluctuates greatly. In the same fasting state, the blood sugar values at 6: 00 am and 9: 00 am are different. Similarly, the blood glucose value of 1h after meals is different from that of 2 hours after meals.