At McAdams Law Office, our criminal defense attorneys believe every person accused of a crime deserves a defense built on facts, not flawed evidence. A question we hear often is: What is chain of custody? It refers to the official written record tracking every step evidence takes, from seizure and transfer all the way through analysis.
Prosecutors rely on this record to prove evidence reached the courtroom intact and unaltered. When gaps or errors appear in the documentation, the legal standing of the evidence weakens, and the entire case can shift in favor of the defendant. Knowing where those gaps exist can change everything about how your defense moves forward.
Chain of custody documentation, according to the National Institutes of Health, begins as a chronological paper trail the moment law enforcement seizes an item and continues through laboratory analysis and courtroom presentation.
Every person who handles the evidence must sign for the transfer and record the exact date and time of each handoff. Prosecutors cannot afford gaps in this record, and neither can a defense attorney afford to overlook them. A single missing signature or an undocumented storage period can turn otherwise powerful evidence into something a court cannot legally consider.
Multiple parties share this responsibility. Responding officers begin the record at the scene, evidence technicians log each transfer within the property room, and forensic analysts sign for evidence samples before testing and again after returning the material to the evidence custodian.
In some Colorado cases, medical personnel or civilian witnesses also handle biological samples. Any person who touches or examines the evidence without leaving a proper record creates a potential weakness in the prosecution’s case.
The chain of custody directly determines whether evidence holds up in a Colorado courtroom. When law enforcement or prosecutors fail to maintain proper documentation, a criminal defense attorney can argue that the evidence no longer proves what the prosecution claims. A judge may then rule the item inadmissible, meaning the jury never sees or hears about it, which can weaken or collapse the state’s case entirely.
For defendants facing serious criminal charges in Weld County, this distinction often makes the difference between conviction and dismissal. That process begins with reviewing every document, every signature, and every recorded transfer linked to the evidence against you. Identifying even one break in the chain can open doors the prosecution never expected.
¨We’re not just a business in Weld County; we’re a part of the community. Living and working here, we’re dedicated to supporting the people of Greeley. Our office is right by the courthouse, deep in the heart of the local legal scene. With over 140 jury trials in 20 years, our experienced attorneys understand that everyone deserves respect and a strong defense, no matter the situation¨
A defense attorney examines the complete evidence log, looking for inconsistencies, missing signatures, unauthorized transfers, or unexplained gaps in time. When documentation falters, your attorney can file a legal request called a motion to suppress, asking the court to throw out the compromised evidence.
Successful suppression can remove key prosecution exhibits from trial. Defense attorneys also cross-examine lab technicians, officers, and the personnel responsible for storing and tracking evidence to expose handling errors and procedural failures. In many Colorado criminal cases, the evidence record contains more problems than the prosecution ever anticipated.
Evidence mishandling occurs more often than many defendants realize. Research from the National Institute of Justice highlights how false or misleading forensic evidence contributes to wrongful convictions, showing just how costly poor record-keeping can be in real cases. Common errors include improper packaging leading to contamination, missing transfer logs, unsecured storage, and mislabeled evidence tags.
Lab technicians sometimes analyze samples without first completing chain-of-custody verification. Officers occasionally fail to photograph evidence in its original position at the crime scene. In digital evidence cases, files get copied or accessed without a proper record of who accessed them and when. Any one of these mistakes can give your defense attorney a legitimate opening in court.
Knowing these details is only the first step. Still asking yourself, “What is chain of custody and whether it applies to your case?” If you or someone you love faces criminal charges in Greeley or anywhere in Weld County, do not wait.
Call McAdams Law Office at (970) 353-0000 to speak with a criminal defense attorney who understands Colorado law and will fight for the outcome you deserve.
| DUI/DWAI Victories | Criminal Defense Wins |
|---|---|
People v. S.M.Two DUIs downgraded to DWAI, |
People v. M.J.Assault and child abuse charges |
People v. S.D.DUI dismissed, pled to |
People v. S.C.Theft charge dropped, |
People v. B.S.Breath test challenged, |
People v. A.E.Drug charges dismissed, |
People v. E.B.No jail, favorable plea despite |
People v. J.K.Burglary plea reduced, |
People v. R.G.One DWAI dismissed, another reduced with minimal work release. |
People v. C.R.Traffic offense reduced, |
William T. McAdams, known as Bill, is a highly experienced criminal defense attorney and former prosecutor. Since establishing McAdams Law Office in 2006, he has represented clients in cases including DUI, domestic violence, and theft, handling over 100 jury trials. Bill serves clients predominantly in Weld and Larimer counties, including Greeley, Evans, Windsor, Loveland, and Fort Collins. An active community volunteer and member of multiple legal associations, he is dedicated to protecting his clients’ rights.
This page has been written, edited, and reviewed by a team of legal writers following our comprehensive editorial guidelines. This page was approved by Founding Partiner, William McAdams who has more than 25 years of legal experience as a personal injury attorney.