What is the correct method of obtaining a blood glucose reading?

The correct method of obtaining a blood glucose reading involves pricking the fingertip with a lancing device, applying blood to the test strip, and then waiting for the result. This approach is standard practice because it ensures that a sufficient and accurate sample of capillary blood is obtained for reading the glucose levels.

Using a lancing device allows for a controlled and sterile way to obtain a droplet of blood, minimizing discomfort and reducing the risk of infection. Applying the blood directly to the test strip ensures that the device can accurately measure the glucose concentration. Following this, the device processes the sample and displays the result within seconds, providing timely and essential information for the management of blood glucose levels.

The other methods listed either do not adhere to the recognized procedures for blood glucose monitoring or are less precise. For example, pricking the fingertip and waiting for a minute does not provide a sample to analyze the glucose level, and taking blood from the arm with a syringe may not yield results that reflect current glucose levels, as venous blood can differ from capillary blood. Using saliva on the test strip is not a validated method for measuring blood glucose and lacks reliability. Therefore, option B accurately describes the correct process for obtaining a blood glucose reading.