Final answer:
The most common POCT chemistry test is the Blood Glucose Test, which involves a glucose oxidase reaction and provides immediate glucose concentration values for patients, particularly useful for diabetes management.
Step-by-step explanation:
The most common chemistry test performed by means of POCT (Point-of-Care Testing) is the Blood Glucose Test. Blood Glucose Tests are widely used because they provide critical information for patients with diabetes and can be performed quickly using portable devices.
These devices typically use a reaction involving glucose oxidase to measure glucose levels in blood. The formation of gluconic acid and hydrogen peroxide leads to a color change on a reagent strip, which is quantified using a photometer or an amperometric system to provide a glucose concentration value.