MCAT vs USMLE Step 1: From Pre-Med to Medical School

Key differences

• compare_arrowsPurpose: the MCAT is an admissions test; Step 1 is the first exam toward a U.S. medical license.
• compare_arrowsScoring: the MCAT gives a scaled score (472–528); Step 1 has reported only pass or fail since January 26, 2022.
• compare_arrowsFormat: Step 1 changed on May 14, 2026, to fourteen 30-minute blocks of up to 20 questions, with at least 55 minutes of break time in an 8-hour session.
• compare_arrowsContent: the MCAT covers undergraduate science and reasoning; Step 1 applies basic science to disease, diagnosis and treatment.
• compare_arrowsTiming: you take the MCAT before applying to medical school; most students take Step 1 after the preclinical years of medical school.
• compare_arrowsOfficial practice: AAMC sells full-length MCAT practice exams (Practice Exam 1 is free); NBME offers self-assessments for Step 1.
• compare_arrowsDepth: biochemistry, physiology and behavioral science overlap, but Step 1 goes much deeper into pathology, pharmacology and microbiology.

The bottom line

The MCAT is the door into medical school; Step 1 is the first licensing gate after it. They test different things, so prepare for each on its own terms.