Which statement is true regarding glucose tolerance testing safety before the test?

Which statement is true regarding glucose tolerance testing safety before the test?

• A. Corticosteroids could constitute a variance if taken prior to a GTT.
• B. Corticosteroids have no effect on GTT results.
• C. Insulin must be stopped for 24 hours.
• D. GTT cannot be performed if the patient has eaten.

Answer: (A)

Medications that affect glucose metabolism are a critical safety and accuracy factor before performing a glucose tolerance test. Corticosteroids raise blood glucose by promoting glucose production in the liver and reducing insulin sensitivity. If a patient takes corticosteroids prior to the test, their blood sugar can be higher than normal and not reflect the body’s true response to the glucose load. This creates a variance in the test result, risking misinterpretation and potentially unsafe clinical decisions. Because of this, recognizing corticosteroid use and assessing the need to reschedule or adjust the plan is the best answer for safety before the test. While fasting is normally required and an eating state would invalidate the test, those points are procedural rather than specifically about safety risks from substances that alter glucose handling. Similarly, stopping insulin for a day isn’t a standard safety rule and could pose danger, so it’s not the primary safety consideration here.

Medications that affect glucose metabolism are a critical safety and accuracy factor before performing a glucose tolerance test. Corticosteroids raise blood glucose by promoting glucose production in the liver and reducing insulin sensitivity. If a patient takes corticosteroids prior to the test, their blood sugar can be higher than normal and not reflect the body’s true response to the glucose load. This creates a variance in the test result, risking misinterpretation and potentially unsafe clinical decisions. Because of this, recognizing corticosteroid use and assessing the need to reschedule or adjust the plan is the best answer for safety before the test.

While fasting is normally required and an eating state would invalidate the test, those points are procedural rather than specifically about safety risks from substances that alter glucose handling. Similarly, stopping insulin for a day isn’t a standard safety rule and could pose danger, so it’s not the primary safety consideration here.