NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Study for the NAPLEX exam with a comprehensive quiz featuring multiple-choice questions and in-depth explanations. Build your pharmacological knowledge and increase your chances of passing the pharmacist licensure examination!

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How is corrected Calcium for albumin <3.5 calculated when not using ionized Ca?

Serum calcium + [(4-albumin) x 0.8]
Serum calcium x [(4+albumin) x 0.8]
Serum calcium / [(4-albumin) x 0.8]
Serum calcium - [(4+albumin) x 0.8]

The correct answer is: Serum calcium + [(4-albumin) x 0.8]

Corrected calcium for albumin <3.5 is calculated by adjusting the serum calcium level based on the albumin level. The formula is serum calcium + [(4-albumin) x 0.8]. This is because albumin binds to calcium and lowers its availability in the blood. This formula takes into account the amount of albumin present and adjusts the serum calcium level accordingly. Option B is incorrect because it multiplies the albumin level instead of subtracting it from 4. Option C is incorrect because it divides the serum calcium level instead of adding it to the albumin adjustment. Option D is incorrect because it subtracts the albumin adjustment instead of adding it.