Military drug testing relies on a tightly controlled process. A service member provides a urine sample under observation, the sample is sealed and labeled, a chain of custody documents each transfer, and a Department of Defense laboratory analyzes it. When a positive result becomes the basis for nonjudicial punishment under Article 15 of the Uniform Code of Military Justice, the defense often points to mistakes in that process. A bottle was labeled out of order, an observer’s initials were missing, a form was completed late. The natural question is whether such minor procedural errors are fatal to the commander’s case at nonjudicial punishment. The honest answer is that they usually are not automatically fatal, but they can still matter a great deal.
How nonjudicial punishment differs from a court-martial
The first thing to understand is the forum. Nonjudicial punishment is not a criminal trial. It is a commander’s tool for handling minor misconduct without the formality of a court-martial. There is no military judge, no panel, and no application of the formal rules of evidence in the way they govern a court-martial. The commander acts as the decision maker and may consider a wide range of information.
This has a direct effect on how procedural errors are handled. In a court-martial, the Military Rules of Evidence control admissibility, and a serious break in the chain of custody or a foundational defect can lead a judge to exclude a urinalysis result altogether. At nonjudicial punishment, those exclusionary mechanisms do not operate the same way. The commander is generally free to consider the urinalysis report and to weigh any flaws in the process as part of deciding what happened, rather than being required to throw the evidence out.
The standard the commander applies
Because nonjudicial punishment is not a trial, the burden of proof is not the criminal beyond-a-reasonable-doubt standard. The practice varies by service. In the Navy and Marine Corps, the recognized standard is a preponderance of the evidence, meaning the commander must conclude it is more likely than not that the offense occurred. In some other services the burden is not stated as a fixed legal standard at all, and the commander decides based on a personal evaluation of the evidence. Either way, the threshold a procedural error must overcome is lower than at a court-martial.
Why minor errors are usually not fatal
A genuinely minor, technical error rarely undermines the substance of a result. If a form was signed a few minutes late but the sample was properly sealed, observed, and tracked, the error does not actually call into question whether the sample belonged to the accused or whether the laboratory tested it correctly. Commanders are entitled to recognize that not every clerical imperfection changes the meaning of a confirmed positive from an accredited laboratory.
The commander also retains broad discretion at the front end. A commanding officer can decide that a result was the product of administrative error, faulty chain of custody, or tampering, and choose not to impose punishment at all. But the rules do not require that conclusion for every small mistake. The commander may instead decide that the error was immaterial and that the positive result is reliable.
When errors do make a difference
Procedural problems are not meaningless, and a defense built around them can succeed in the right case. The distinction is between a clerical slip and an error that creates real doubt about whether the sample is what the government says it is.
An error matters when it goes to identity or integrity. If the chain of custody contains a gap during which the sample was unaccounted for, if labeling inconsistencies make it impossible to be sure the tested sample came from the accused, or if multiple irregularities accumulate into a pattern that suggests the process broke down, then the foundation for trusting the result weakens. At that point the commander, applying even a preponderance standard, may not be able to conclude that wrongful use is more likely than not.
Errors also matter to the member’s rights and options. A service member offered nonjudicial punishment generally has the right to demand trial by court-martial instead, except aboard a vessel. Where the laboratory and chain-of-custody documentation is flawed, demanding trial can be a powerful strategy, because the same defect that the commander could overlook at nonjudicial punishment may lead a military judge to exclude the evidence under the formal rules. The accused also has the right to present matters in defense, extenuation, and mitigation to the commander, and a clear explanation of how the errors undermine reliability is exactly the kind of matter the commander must consider.
Innocent ingestion and the wrongfulness element
Procedural attacks are not the only response to a positive test. The underlying offense, wrongful use of a controlled substance, requires that the use be wrongful, meaning knowing and without legal justification. A service member who can show unknowing ingestion, a valid prescription, or another lawful explanation attacks the substance of the allegation rather than the process. Combining a credible innocent-explanation argument with documented procedural irregularities is often more persuasive than either alone.
Practical guidance
For a service member facing nonjudicial punishment after a positive urinalysis, the realistic view is this. A single minor clerical error is unlikely to defeat the action on its own, because nonjudicial punishment uses a lower burden of proof and does not apply formal exclusionary rules. But errors are far from useless. They can support a request for trial by court-martial, where the formal rules give them more force; they can combine into a reliability challenge that prevents the commander from finding the offense more likely than not; and they can bolster a defense of innocent ingestion. The right question is not whether a mistake was made, but whether the mistake creates genuine doubt about whether this member wrongfully used drugs. The larger that doubt, the closer a procedural error comes to being fatal.
Disclaimer
This article is provided strictly for general educational and informational purposes. It is intended to explain how the Uniform Code of Military Justice (UCMJ), the Rules for Courts-Martial, the Military Rules of Evidence, and related military administrative processes work as a matter of public legal education. It does not constitute legal advice, a legal opinion, or a recommendation about any particular case, and it is not a substitute for advice from a qualified military defense attorney who can evaluate the specific facts and command, service, and jurisdictional circumstances involved.
Reading this article, or contacting any website on which it appears, does not create an attorney-client relationship between the reader and any law firm, attorney, or author. Every court-martial, nonjudicial punishment action, administrative separation, and security-clearance matter turns on its own facts, the charged articles, the convening authority, the service branch, and the evidence, and outcomes vary widely from one case to another.
Military law also changes over time. The Military Justice Act of 2016 (effective January 1, 2019) and subsequent National Defense Authorization Acts renumbered and rewrote many punitive articles, revised the Article 32 preliminary hearing, and altered sentencing, clemency, and appellate procedures. Statutes, regulations, executive orders, the Manual for Courts-Martial, and decisions of the service Courts of Criminal Appeals and the Court of Appeals for the Armed Forces may have been amended, superseded, or reinterpreted after this article was written, and article numbers or procedures cited here may have changed.
For these reasons, no reader should act or decline to act based on this content without first consulting a licensed attorney experienced in military justice about their own situation. The author and publisher make no warranty, express or implied, as to the accuracy, completeness, timeliness, or current applicability of the information provided, and disclaim any liability for any action taken or not taken in reliance on it. If you are facing investigation, charges, or an adverse administrative action, time limits may apply, and you should seek qualified counsel promptly.