Drug DUI Defense in Casper
Forensic Lawyer-Scientist Analysis of Drug DUI Evidence
Wyoming Statutes § 31-5-233 prohibits driving or being in actual physical control of a vehicle while under the influence of a controlled substance to a degree that renders the person incapable of safely driving. An allegation may involve marijuana, prescription or over-the-counter medication, another controlled substance, or a combination of drugs and alcohol. Detecting a substance is not the same as proving that it caused legally significant impairment.
R. Michael Vang P.C. defends people accused of Drug DUI and other criminal offenses throughout Wyoming. Mr. Vang holds the Forensic Lawyer-Scientist Designation awarded by the American Chemical Society Chemistry and the Law Division. This scientific background informs his analysis of blood and urine testing, laboratory procedures, and toxicology evidence.
Call (307) 336-7570 for a free initial consultation about a drugged-driving charge in Casper or Natrona County.
More Than 100 Jury Trials Inform the Scientific Review
A scientific defense review may examine sample collection and preservation, testing methods, laboratory protocols, potential contamination, and chain of custody. It may also consider whether the reported result supports the prosecution’s theory about the driver’s condition at the relevant time.
Mr. Vang has handled more than 100 criminal jury trials and has appeared before the Wyoming Supreme Court and the United States Supreme Court. His courtroom experience informs how the firm evaluates both the underlying science and the testimony that laboratory personnel, arresting officers, and other government witnesses may provide.
Substances & Testing in Drug DUI Cases
Driving under the influence of drugs allegations aren’t limited to illegal substances. A case may involve prescription drugs, over-the-counter medications, marijuana, household substances, or several substances taken together. Lawful possession or a valid prescription doesn’t resolve whether the evidence establishes controlled substance impairment while driving.
Evidence commonly reviewed in these cases includes:
- Driving conduct: The reason for the stop, reported traffic violations, collision evidence, and recorded observations.
- Officer observations: Statements about speech, coordination, alertness, pupils, behavior, or other claimed indicators of impairment.
- Field sobriety testing: The instructions given, testing conditions, administration of each exercise, and the officer’s interpretation.
- Chemical testing: Blood or urine collection records, toxicology results, testing times, reported substances, and laboratory documentation.
- Medical information: Relevant prescriptions, dosage information, treatment records, and other facts that may place a result in context.
Blood and urine results must be considered alongside factors such as dosage, metabolism, collection timing, and observed driving behavior. A positive result isn’t the entire case. Mr. Vang has taught other attorneys about DUI law for more than 25 years, giving him sustained experience with the legal and scientific questions these charges present.
Drug DUI Proceedings in Casper & Natrona County
The Natrona County Circuit Court is located in Casper and is part of Wyoming’s Seventh Judicial District. Depending on the charge and procedural posture, a case may involve circuit court proceedings, district court proceedings, administrative license issues, or multiple legal tracks. R. Michael Vang P.C. represents clients throughout Wyoming, including those facing charges in Natrona County.
The appropriate response depends on the charging document, arrest circumstances, prior history, chemical testing, and any related collision or injury allegation. Wyoming’s implied consent process concerns chemical testing and potential driving-privilege consequences. Because a driver’s license proceeding may be separate from the criminal charge, every notice and deadline requires prompt review.
How the Firm Reviews a Drug DUI Charge
A thorough review looks beyond a reported laboratory result. It compares the prosecution’s scientific evidence with the circumstances of the stop, the driver’s conduct, officer observations, testing procedures, and constitutional requirements.
The review may address:
- The traffic stop: Whether the officer had a lawful basis to stop or detain the vehicle.
- The arrest decision: Whether the available facts legally supported the arrest.
- Statements and searches: Whether questioning, searches, or evidence collection raised constitutional concerns.
- Testing procedures: Whether field sobriety testing, the blood draw, sample storage, or laboratory analysis followed applicable procedures.
- Result interpretation: Whether the toxicology findings support the claimed degree of impairment when compared with the remaining evidence.
Potential motions, evidentiary challenges, and trial decisions depend on the complete record. Mr. Vang’s forensic training supports scrutiny of testing reliability, laboratory protocols, contamination concerns, and government-witness testimony. He is admitted to practice in all Wyoming state and federal courts, the Tenth Circuit Court of Appeals, and the United States Supreme Court. He has also received the National College of DUI Defense Trial Advocacy Award.
Potential Criminal & License Consequences
Consequences vary according to the charge, prior convictions, testing circumstances, and other facts. Wyoming law distinguishes among first, second, third, and fourth or subsequent convictions within its statutory lookback period. Depending on the case, the consequences may include fines, incarceration, substance-use treatment or assessment requirements, and driver’s license suspension.
A collision involving serious bodily injury or death may create criminal exposure beyond the underlying impaired-driving allegation. The firm handles misdemeanor and felony charges, allowing related allegations to be assessed together rather than treating one count in isolation.
Preparing for the Initial Consultation
An initial conversation can clarify the pending charge, court setting, immediate deadlines, testing history, and any separate license process. Useful materials may include the citation or charging document, court notices, release conditions, testing paperwork, relevant prescription or medical information, and the driver’s account of the stop and arrest.
A person facing charges shouldn’t discuss case details publicly or post them online. Before making decisions about statements, hearings, laboratory records, or plea options, the accused should seek advice based on the actual documents and evidence.
Request a Confidential Drug DUI Consultation
R. Michael Vang P.C. provides free initial consultations to people accused of Drug DUI in Casper and Natrona County. Mr. Vang combines courtroom litigation, DUI-law education, forensic-science training, and constitutional-rights advocacy to examine each allegation on its individual facts.
A confidential consultation can identify the governing charge, immediate deadlines, evidence that may require preservation, and available procedural choices. No defense strategy or outcome can be determined without reviewing the complete record.
Call (307) 336-7570 to request a free initial consultation with R. Michael Vang P.C..
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“Mr. Vang is an outstanding attorney.”
Fighting to Protect Your Rights
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Teaches Other Attorneys DUI Law
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Over 27 Years of Experience
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Initial Consultation is Always Free
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Specializes in Criminal & DUI Cases