Certified Clinical Medical Assistant Exam Practice Question

Correct Answer: D

Rationale: Option D is the most critical factor affecting the outcome of a Glucose Tolerance Test (GTT). Consuming soda, which contains high levels of sugar, can artificially elevate blood glucose levels, leading to inaccurate test results.

Option A, while less efficient, does not inherently affect the test's biological outcome; it merely impacts data management. Option B, drawing blood three times, is standard practice in a GTT to monitor glucose levels over time and does not affect the test's integrity. Option C, a nurse practitioner conducting the test, does not influence the biological results as long as proper protocols are followed.