The MCAT (Medical College Admission Test) is a standardized exam required by nearly all medical schools in the United States and Canada as part of the admissions process. It tests your scientific knowledge, critical thinking, and problem-solving ability across four sections, takes about 7.5 hours to complete, and is scored on a scale of 472 to 528. The exam is developed and administered by the Association of American Medical Colleges (AAMC).
What the MCAT Actually Tests
The MCAT isn’t a pure memorization test. It’s designed to measure whether you can apply scientific concepts to solve problems, the way you’d need to in medical school. The exam covers biology, chemistry, physics, biochemistry, psychology, sociology, and reading comprehension, all spread across four sections:
- Chemical and Physical Foundations of Biological Systems: General chemistry, organic chemistry, and physics, with an emphasis on how these sciences apply to living organisms. 59 questions, 95 minutes.
- Critical Analysis and Reasoning Skills (CARS): Passage-based reading comprehension, similar to verbal reasoning tests you may have taken before. No science background needed. 53 questions, 90 minutes.
- Biological and Biochemical Foundations of Living Systems: Biology and biochemistry, focused on the processes that keep organisms alive. 59 questions, 95 minutes.
- Psychological, Social, and Biological Foundations of Behavior: Psychology, sociology, and the biological factors that influence how people think and act. 59 questions, 95 minutes.
Each section also includes a handful of “field-test” questions the AAMC is evaluating for future exams. These don’t count toward your score, and you won’t know which ones they are.
How Long the Test Day Takes
The actual content time is 6 hours and 15 minutes, but you’ll be at the testing center much longer. Total seated time runs about 7 hours and 30 minutes once you factor in a tutorial, optional breaks between sections, and a 30-minute mid-exam lunch break after the CARS section. You also need to arrive at least 30 minutes early for check-in. Plan for a full 8-hour day.
How Scoring Works
Each of the four sections is scored on a scale from 118 to 132, with a midpoint of 125. Your total score is the sum of all four sections, ranging from 472 to 528. A 500 sits right in the middle of the scale. The exam is scored on a curve relative to other test-takers, so your percentile rank (how you compare to everyone else) matters just as much as your raw number. Competitive applicants to MD programs typically score well above the midpoint, though target scores vary by school.
What You Need to Study
All of the content on the MCAT is covered in standard introductory college courses. According to the AAMC, you should be prepared if you’ve completed introductory biology, general chemistry, organic chemistry, physics, biochemistry (at least one semester), and introductory psychology and sociology. Research methods and basic statistics also appear on the exam, drawn from the kind of material you’d encounter in introductory science labs or social science courses.
Most students spend several months preparing, often using a combination of content review books, practice exams, and sometimes commercial prep courses. The AAMC itself offers official practice materials, which tend to be the closest match to the real exam.
Cost and Registration
Standard registration costs $355. If you qualify for the AAMC’s Fee Assistance Program, which is designed for applicants with significant financial limitations, the fee drops to $145. Testing outside the U.S., Canada, or U.S. territories adds an extra $130 international surcharge. You must be approved for fee assistance before selecting your test date.
How Many Times You Can Take It
The AAMC sets firm limits on retakes. You can take the MCAT up to three times in a single calendar year and four times across two consecutive calendar years. The lifetime cap is seven attempts total. Importantly, both voided exams (where you choose not to receive a score) and no-shows count toward that lifetime limit, so registering and not showing up still costs you an attempt.
Who Needs to Take It
If you’re applying to MD or DO programs in the United States or MD programs in Canada, you will almost certainly need an MCAT score. Some programs also accept it for other health professions, though requirements vary. The exam is computer-based and offered at testing centers throughout the year, with multiple test dates available from January through September. Most applicants take it in the spring or summer of the year before they plan to start medical school.