The principle of blood glucose meter is mainly divided into two kinds: photochemical method and electrochemical method. The photochemical blood glucose meter is similar to a CD player and has a photoelectric head. The price of this blood glucose meter is relatively cheap, but the detector head is exposed to the air, which is easily polluted and affects the test results. The error range is plus or minus 0.8. Therefore, the light hole must be cleaned frequently. It is recommended to calibrate it at the maintenance station after two years of use. The electrochemical blood glucose meter can avoid pollution, and the error range is plus or minus 0.2. Under normal use, calibration is not required.
The blood glucose test strip used for blood glucose test is specially matched with the blood glucose meters of various brands, and cannot be used universally among different brands. There are two blood sampling methods for blood glucose test strips on the market: dripping blood type and siphon type. Blood drop type blood glucose test strip requires too many blood samples to be added to the test strip. Too many or too few blood drops or inaccurate location will affect the test value. The blood glucose test strip with automatic siphon blood suction requires less blood samples, and the sample amount can be automatically controlled. The test paper has a confirmation point that can show whether the blood is appropriate. The operation is simple, and it can also avoid the error of adding blood samples, so as to ensure the accuracy of the test results.