NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What is the correction factor for 1 unit of rapid acting insulin using the 1800 rule?

1500/TDD
1800/TDD
TDD/1500
TDD/1800

The correct answer is: 1800/TDD

The correction factor for 1 unit of rapid-acting insulin using the 1800 rule is calculated by dividing 1800 by the total daily dose (TDD) of insulin. This calculation helps determine how much 1 unit of rapid-acting insulin will reduce blood glucose levels. Therefore, the correct answer is B: 1800/TDD. Options A, C, and D are incorrect as they do not correctly represent the calculation needed with the 1800 rule to determine the correction factor for 1 unit of rapid-acting insulin.