For osteopathic medical students, COMLEX-USA Level 1 is the first major milestone in the medical licensing journey. This computer-based exam is a pass/fail assessment. It evaluates foundational biomedical sciences, osteopathic principles, and clinical reasoning skills.
Understanding the COMLEX Level 1 format and test procedures can greatly reduce your test-day anxiety. This guide outlines what candidates can typically expect from arrival to final sign-out.
Key Exam Facts
COMLEX-USA Level 1 is a one-day, computer-based assessment that evaluates the foundational knowledge and clinical reasoning skills required for future osteopathic physicians to deliver safe and effective osteopathic medical care. The National Board of Osteopathic Medical Examiners (NBOME) sets strict guidelines for the test structure.
| Feature | Details |
| Exam Type | Computer-based, Pass/Fail |
| Testing Center | Pearson VUE |
| Total Questions | 320 multiple-choice questions |
| Question Format | Single-best-answer |
| Testing Sessions | 2 sessions (4 hours each) |
| Total Testing Time | 8 hours |
| Tutorial | Up to 16 minutes (optional) |
| Pooled Break Time | 60 minutes total |
| Total Exam Day | Approximately 9 hours |
As of May 2026, COMLEX-USA Level 1 contains 320 questions, reduced from 352 questions in prior administrations, while maintaining 8 hours of testing time and 60 minutes of pooled break time available during scheduled breaks.
COMLEX Level 1 Exam Structure
The examination day is highly structured. The eight-hour test is divided into two equal blocks.
Arrival & Check-In
At least 30 minutes before the appointment
Verify your identity, complete security procedures, and store personal belongings in assigned lockers.
Optional Tutorial
Up to 16 Minutes
Review the testing interface, navigation tools, and exam features before beginning.
Session A (Sections 1–4)
4 Hours
Complete approximately 160 single-best-answer questions during the first testing session.
Pooled Break Time
60 Minutes Total
Use break time during scheduled break opportunities throughout the exam.
Session B (Sections 5–8)
4 Hours
Complete the remaining approximately 160 questions. Security procedures apply when re-entering the testing room after breaks.
Post-Exam Survey
Optional
Provide feedback on the testing experience before concluding your exam day.
Each section contains approximately 40 questions. The exam is administered in two four-hour sessions, with four sections per session. Candidates may review and change answers within the current section until they choose to move on. Once a section is completed and the next section begins, it cannot be revisited.
Understanding the COMLEX Level 1 Exam Format in Detail
Knowing how questions are presented and how the testing software functions can help you manage your time effectively on exam day.
Section Layout and Timing
COMLEX-USA Level 1 is a computer-based examination consisting of 320 single-best-answer multiple-choice questions. The exam is divided into eight sections, with 40 questions in each section.
The sections are organized into two testing sessions:
- Session A: Sections 1–4
- Session B: Sections 5–8
Each session provides four hours of testing time, for a total of eight hours of examination time. Scheduled breaks are available throughout the testing day as outlined by NBOME.
The examination is administered in two four-hour testing sessions completed on the same day.
Break Structure and Pacing
The total time allocated for the entire exam day seat block is approximately nine hours. This includes eight hours of core testing time, a 16-minute pre-examination tutorial, and an initial pool of 60 minutes for breaks. Crucially, the tutorial time is fluid: any time saved by clicking through the tutorial in fewer than 16 minutes is automatically added directly into your pooled break time, giving you extra flexibility throughout the day.
Candidates may use their 60 minutes of pooled break time during the scheduled break periods throughout the examination. Beginning with the current examination format, candidates have access to seven scheduled break opportunities, providing greater flexibility in how break time is distributed across the testing day.
Question Types
COMLEX-USA Level 1 consists of single-best-answer multiple-choice questions delivered through a computer-based testing platform. Each question presents several answer choices, and candidates must select the one best answer.
Questions may include clinical scenarios, patient histories, physical examination findings, laboratory results, medical images, charts, or other supporting information. Candidates are expected to analyze the information provided and apply their knowledge to arrive at the most appropriate answer.
For students preparing for COMLEX Level 1, it is important to understand that the exam emphasizes more than factual recall. Many questions require interpretation, clinical reasoning, and the application of foundational biomedical and osteopathic medical concepts to patient-focused situations.
Reviewing practice questions that mirror the actual exam format can help candidates become familiar with the style and complexity of the questions they will encounter on test day.
Clinical Vignette-Based Questions
Many COMLEX-USA Level 1 questions are presented as clinical vignettes that require the application of foundational medical knowledge to patient-care scenarios.
These questions may include:
- Patient history
- Signs and symptoms
- Physical examination findings
- Laboratory data
- Diagnostic test results
- Imaging studies
Candidates must evaluate the information provided and select the most appropriate answer based on the clinical scenario. Question stems vary in length and complexity, ranging from brief patient presentations to detailed cases requiring integration of multiple clinical findings.
Osteopathic Principles and Practice Integration
A distinguishing feature of COMLEX-USA Level 1 is the integration of osteopathic principles and practice throughout the examination.
Questions may assess your understanding of:
- Osteopathic philosophy
- Structure-function relationships
- Osteopathic manipulative treatment (OMT)
- Somatic dysfunction
- Osteopathic patient care principles
These concepts are integrated with biomedical and clinical content and may appear within a variety of patient-care scenarios rather than in a separate osteopathic section.
Multimedia Questions
Some COMLEX-USA Level 1 questions may include multimedia exhibits designed to simulate clinical findings and patient presentations.
Candidates may encounter:
- Medical images
- Radiographs (X-rays)
- Histology or pathology slides
- Electrocardiograms (ECGs)
- Audio recordings of heart or lung sounds
- Video clips demonstrating clinical findings
These exhibits are viewed directly within the testing software. For questions containing audio, headphones are provided at the testing center.
Question Review and Navigation
Within an active section, candidates can:
- Move forward and backward between questions
- Change previously selected answers
- Flag questions for later review
- Review unanswered questions before submitting the section
Before submitting a section, the testing software provides a review screen that identifies questions that have been answered, left incomplete, or flagged for review. This allows candidates to revisit items within that section before final submission.
Once a section is submitted, answers in that section become final. Candidates cannot return to or modify questions from a previously submitted section.
Testing Software Tools
The COMLEX-USA Level 1 testing platform includes several built-in tools designed to support the testing experience.
Available tools may include:
- On-screen calculator
- Text highlighting tool
- Answer choice strikeout feature
- Question flagging function
Candidates can become familiar with these features during the optional tutorial before the exam begins.
Time Management Considerations
Although each section contains 40 questions, individual questions can vary considerably in length and complexity.
Some items can be answered quickly, while others require careful analysis of clinical information, laboratory findings, medical images, or other exhibits.
Because each four-hour testing session has a fixed time limit, effective pacing across all sections is important. Candidates should monitor their progress throughout the exam and avoid spending excessive time on any single question to ensure they can complete all questions within the allotted time.
Students preparing for COMLEX-USA Level 1 may also benefit from structured coaching and review resources. Gold USMLE Review, a provider of USMLE and COMLEX coaching programs, offers preparation support for medical students pursuing licensing examinations. The organization also provides free scholarships for VA students enrolled in USMLE Step 1, USMLE Step 2 CK, USMLE Step 3, COMLEX Level 1, COMLEX Level 2, and COMLEX Level 3 preparation courses.
In addition, VA military students may attend eligible courses at no cost, and military-affiliated students may qualify for reimbursement through VA education benefits. Eligible students can also receive 50% off all USMLE courses before applying available VA benefits. For more information, contact Gold USMLE Review at 1-866-446-5327 or goldusmlereview@gmail.com.
Final Thoughts
The COMLEX Level 1 format is designed to assess the application of medical knowledge rather than simple recall of facts. Understanding how the exam is organized, how sections are timed, and how questions are presented can help you approach test day with greater confidence and a clear strategy for managing your time throughout the examination.
