Acneiform skin disorders Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 19-year-old woman comes to the office because of worsening acne.  She has had multiple bouts of acne affecting her shoulders, chest, and face. The acne was treated with topical benzoyl peroxide and oral antibiotics with a slight improvement over the past three months. She is concerned because recently, her acneiform lesions have increased in size, transforming into nodules, thereby affecting her appearance. The patient immigrated from India with her family ten years ago. Past medical history is noncontributory. She is sexually active with her boyfriend and uses condoms consistently. She does not use tobacco, alcohol, or illicit drugs. After performing a complete physical examination, a decision to start oral isotretinoin is made. Which of the following laboratory investigations should be performed before initiating this drug? 

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