Develop your Clinical Reasoning for Step 1
MQB is the minimalist, AI-powered question bank for medical students. Master USMLE Step 1 concepts with 7,800+ clinical vignettes and instant Socratic feedback.
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A 28-year-old woman presents with severe fatigue, dark urine, and jaundice three days after starting trimethoprim-sulfamethoxazole for a urinary tract infection. Laboratory studies reveal a decreased hemoglobin concentration and an elevated reticulocyte count. A peripheral blood smear shows erythrocytes with peripheral clearings (bite cells). A deficiency in which of the following enzymes is the most likely cause of this patient's presentation?
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Frequently Asked Questions
Is this a subscription?
No. We hate medical school subscriptions as much as you do. You pay $49 once, and you own access to the Step 1 Q-Bank forever.
How many questions are in the bank?
Currently, we have over 7,800 original clinical vignettes targeting USMLE Step 1, categorized by both organ system and clinical subject.
How does the Socratic Tutor work?
Instead of just telling you option C is correct, our AI reads the clinical truth of the question and explains the specific trap you fell into if you get it wrong.
Will you add Step 2 questions?
Yes. Our current focus is providing the best minimalist Step 1 experience, but clinical-year questions are on the roadmap.