The ability to “redo” or return to MEPS depends entirely on why you “failed” and the determination made by your service liaison. There is no universal “retake” policy, but the process is often more nuanced than a simple pass/fail.

You typically CAN return to MEPS if:

You received a temporary disqualification for a correctable issue (e.g., high blood pressure on the day of the exam, a correctable vision problem, or a minor paperwork discrepancy).
Your recruiter and the service branch are pursuing a medical or moral waiver for your condition, and it is approved. Waiver approval grants you permission to return to MEPS to finalize your processing.
You need to complete a consultation or specialist evaluation (e.g., see an orthopedic doctor) and return with the required documentation for review.

You typically CANNOT simply “redo” MEPS if:

You receive a permanent disqualification for a condition with no waiver path (e.g., certain severe psychiatric conditions, insulin-dependent diabetes, or a conviction for a serious felony).
You fail the drug test. This is a major legal and integrity issue. A failed drug test usually results in a lengthy bar from applying (often 6 months to 2 years, if ever), and you must be able to prove sustained abstinence.
You are deemed to have fraudulently enlisted by deliberately concealing information.

Key Action Step: Your recruiter is your most important resource. If you are disqualified, work closely with them to understand the specific reason, whether a waiver is possible, and the exact steps and timeline for a potential return.

For a detailed list of conditions that can cause a disqualification, read our guide on What will disqualify me from MEPS?.

For an external resource discussing the waiver process and timelines, you can review information from Military.com’s MEPS section.