What causes inaccurate blood glucose readings from a blood glucose meter?
May 16, 2023
Source: Cainiu Health
Dr. Pan Yongyuan
Introduction
In general, inaccurate blood glucose readings from a glucometer may be caused by factors such as expired test strips, incorrect operation, improper blood sampling, excessive dirt on the device, or insufficient evaporation of alcohol. Specific reasons are analyzed as follows: In addition to the above-mentioned causes, inaccurate results may also result from the test strip not being fully inserted or damage to the glucometer itself. It is recommended to seek medical attention at a hospital as soon as possible.
Generally, inaccurate blood glucose readings from a glucometer may be caused by factors such as degraded test strips, incorrect operation, problems with blood sampling, excessive dirt on the glucometer, or insufficient evaporation of alcohol. Specific reasons are analyzed as follows:
1. Degraded Test Strips
If test strips are improperly stored and exposed to extreme temperature or humidity, they may degrade, leading to inaccurate readings.
2. Incorrect Operation
Different glucometers may have different operating procedures. If a newly purchased device is not used according to the instructions, operational errors may occur.
3. Problems with Blood Sampling
Glucometers typically require a drop of blood from the fingertip to be applied onto the test strip, which is then inserted into the device for measurement. It is crucial to pay attention during blood collection, as improper technique can introduce errors in the reading.
4. Excessive Dirt on the Glucometer
Glucometers are easily contaminated by dust in the air or residual blood, among other substances. If the device is not kept clean, it may produce inaccurate results.
5. Incomplete Evaporation of Alcohol
Alcohol can cause a chemical reaction with the test strip, resulting in inaccurate blood glucose values. After disinfecting with alcohol, one must wait until it has completely evaporated before performing the blood draw. Failure to do so may not only affect accuracy but also increase pain during pricking.
In addition to the above reasons, inaccurate readings may also result from the test strip not being fully inserted or from damage to the glucometer itself. It is essential to fully understand the proper usage and precautions of the glucometer before conducting a blood glucose test. If a patient experiences any discomfort, prompt medical attention at a hospital is recommended.
