During the Blood Glucose Tolerance Test, what must be done if the initial fasting blood glucose level is above 200 mg/dl?

When the initial fasting blood glucose level is above 200 mg/dl during a Blood Glucose Tolerance Test, it indicates that the patient may already be in a state of hyperglycemia, potentially signifying diabetes mellitus. In such cases, the immediate conclusion from this high reading is that the patient is likely not capable of glucose tolerance testing because they already exhibit symptoms or findings consistent with diabetes. Thus, no further testing is required as the diagnosis can be made based on the elevated fasting glucose level alone.

Other options involve actions that would not be appropriate or helpful in this context. Administering glucose solution would not make sense since the test is meant to assess the body's response to an external glucose load, which is unnecessary at this stage. Giving the patient caffeine or asking them to exercise could interfere with the test results and would not address the immediate concern of an elevated fasting glucose level. Therefore, the correct response is to recognize that further testing in this scenario is unnecessary, opting instead to consider the patient's health management based on the initial finding.