For osteopathic (DO) students, COMLEX-USA is the licensing exam series — and budgeting for it means accounting for exam fees, prep resources, and, for many students, the added cost of also taking the USMLE. Here is a realistic picture.

Prices below are approximate as of 2026 and change regularly. Confirm current figures on the official NBOME pages linked here.

Exam Registration Fees

Each COMLEX-USA level carries its own registration fee. Level 1 costs roughly $700 to register through the NBOME, with the later levels priced separately (and Level 2-CE and Level 3 generally higher). Confirm the current amount on the NBOME registration and scheduling page.

The USMLE Factor

Here is a cost unique to DO students: many also sit USMLE Step exams to widen their residency options, since some programs are more familiar with USMLE scoring. Doing both roughly doubles your exam-fee outlay and adds a second set of prep resources. Whether that investment is worth it depends on your specialty goals — a decision worth discussing with your school's advising office before you spend.

Prep Materials

Approximate ranges (check each vendor for current pricing):

  • Question banks aimed at COMLEX (osteopathic-focused Qbanks): commonly $100–300+ depending on duration.
  • Osteopathic principles / OMT resources: since OMT is tested on COMLEX but not USMLE, budget for dedicated OMT review your USMLE resources won't cover.
  • Review books and video subscriptions: similar to allopathic prep, often $50–100+ each.
  • Flashcards: Anki is free (desktop/web/Android; iOS app about $25 one-time).

If you prepare for both COMLEX and USMLE, expect prep costs to climb accordingly.

The Hidden Costs

  • Travel to a test center and possible lodging.
  • Retake fees if you don't pass.
  • Doubling up on resources when preparing for two exam series at once.

Keep It Lean

  • Since COMLEX and USMLE share a large foundational-science core, most resources count for both — you mainly need to add osteopathic-specific material for COMLEX.
  • Prioritize one strong question bank over several partial subscriptions.
  • Use free resources first before layering on paid ones.

A Cost-Effective Supplement

CliniQuiz helps you get more from a leaner budget. It complements your core COMLEX (and USMLE) resources rather than replacing them: start free, practice curriculum-aware questions and flashcards, and use the AI tutor and quick tap games to memorize concepts on the go — foundational science and osteopathic content alike. It's an affordable way to target weak areas and keep material fresh between clinical duties.

Try a free practice session, or create your free account to add smart, low-cost practice to your COMLEX prep.