Drug DUI

Being charged with DUI after taking prescribed medication or using marijuana can leave you wondering what the officer saw and what the blood test will show. You may also be worried about your license, your job and how to explain what happened.

We start by listening to you and reviewing the evidence: the driving, the officer’s observations, any available video and the blood test. We look at what supports the charge, what can be challenged and whether your medication or a medical condition helps explain what the officer observed.

Here is the short answer. In Virginia, DUI covers drugs as well as alcohol. Under Virginia Code § 18.2-266, it is illegal to drive while under the influence of any drug “to a degree which impairs his ability to drive or operate any motor vehicle, engine or train safely.” For four drugs, the law sets a blood level. For every other drug, including marijuana and prescription medication, there is no legal limit, so the Commonwealth has to prove that the drug actually impaired your driving. That question is usually the heart of a drug DUI case, and it is where we focus.

At a glance

• The law: § 18.2-266 makes it a crime to drive impaired by any drug, by alcohol and drugs combined, or with a blood level at or above the limit for cocaine, methamphetamine, PCP or MDMA.
• Legal limits: set only for those four drugs. There is no legal limit for marijuana, prescription medication or other drugs.
• The test: after a drug DUI arrest, you may be required to give a blood sample under Virginia’s implied consent law.
• Refusing the blood test: a first refusal is a civil offense with a one-year license suspension (§ 18.2-268.3).
• Penalties: a first offense is a Class 1 misdemeanor with a $250 minimum fine. The mandatory jail for a first offense in § 18.2-270(A) depends on blood alcohol level, so it does not apply to a drug-only DUI.
• Your license: A conviction means losing your license for one year. A restricted license may be available. For a first DUI conviction based only on drugs under § 18.2-266(iii) or (v), the court may require an ignition interlock as a condition of a restricted license (§ 18.2-270.1(B)).
• Your record: A drug DUI conviction stays on your criminal record permanently. It normally remains on your Virginia DMV driving record for 11 years, while the six DMV demerit points remain for two years from the offense date.

Definition of Drug DUI

Section 18.2-266 has three parts that apply to drugs:

• Impairment by drugs, clause (iii): driving “while such person is under the influence of any narcotic drug or any other self-administered intoxicant or drug of whatsoever nature, or any combination of such drugs, to a degree which impairs his ability to drive or operate any motor vehicle, engine or train safely.”
• Alcohol and drugs together, clause (iv): driving “while such person is under the combined influence of alcohol and any drug or drugs to a degree which impairs his ability to drive or operate any motor vehicle, engine or train safely.”
• Blood levels for four drugs, clause (v): driving with a blood concentration at or above “0.02 milligrams of cocaine per liter of blood,” “0.1 milligrams of methamphetamine per liter of blood,” “0.01 milligrams of phencyclidine per liter of blood,” or “0.1 milligrams of 3,4-methylenedioxymethamphetamine per liter of blood.”

Virginia’s Department of Forensic Science puts the gap plainly: “While statutory limits exist for alcohol, PCP, cocaine, methamphetamine and MDMA (ecstasy) in blood, none are set for other drugs” (Department of Forensic Science, toxicology).

Prescription medication is covered too. The statute reaches “any narcotic drug or any other self-administered intoxicant or drug of whatsoever nature,” and the question it asks is impairment, not whether the drug was legal. A valid prescription does not by itself answer the charge, and taking your medicine as prescribed does not by itself make you guilty. The DMV’s own guidance says that if driving ability is affected because a driver is under the influence of any drug, the driver “may face the same penalties as driving under the influence of alcohol” (DMV, prescription medications and driving). What matters is whether the Commonwealth can prove the drug impaired your ability to drive safely.

The same is true of marijuana. Whatever the rules for possessing it, driving while impaired by it is a DUI under clause (iii). The DMV states it directly: “Driving under the influence (DUI) of cannabis is a Class 1 Misdemeanor” (DMV, drugged driving).

How Drugs May Impair Driving

Because most drugs have no legal limit, a drug DUI case is built from several kinds of evidence, and each one can be tested. The Commonwealth usually relies on the driving the officer saw, the officer’s observations during the stop, field sobriety tests, and sometimes a drug-influence evaluation by an officer trained to look for signs of drug impairment. The DMV notes that “Law enforcement officers across Virginia are specially trained to observe and recognize drugged driving behaviors.” Then there is the blood test.

A blood result shows what was in your blood when it was drawn. In a prosecution for drug impairment under § 18.2-266(iii) or combined alcohol-and-drug impairment under clause (iv), § 18.2-268.10 requires other competent evidence connecting the drug to impaired driving before the drug-test results are admissible. That requirement does not apply to a prosecution under clause (v), which addresses specified blood concentrations of cocaine, methamphetamine, PCP and MDMA. The Department of Forensic Science explains why impairment evidence matters: “expert toxicology testimony regarding the effects of a drug or a combination of drugs on human performance and driving behavior is often necessary to establish impairment.”

For the four drugs with legal limits, the rule is different. A blood level at or above the limit is a separate offense under clause (v), and under § 18.2-269 the same levels create a presumption that you were impaired. Even then, how the sample was drawn, handled and tested still matters.

If a urine sample was taken in your case, the Department of Forensic Science says that “urine results generally cannot be used as evidence of drug impairment, merely drug use.”

The Blood Test and Your Rights

Virginia’s implied consent law, § 18.2-268.2, applies when you are arrested for DUI “within three hours of the alleged offense.” A person arrested for a drug DUI “may be required to submit to a blood test to determine the drug or both drug and alcohol content of his blood.” Virginia law then sets out how that blood must be handled:

• Who draws it: only the medical professionals and technicians listed in § 18.2-268.5 may withdraw blood, using the cleansing agents and sterile equipment the statute describes.
• How it is sealed: the blood goes into vials approved by the Department of Forensic Science, which are sealed, labeled with a certificate of blood withdrawal and sent to the Department (§ 18.2-268.6).
• Your own test: after completing its analysis, the Department keeps the rest of the sample for at least 90 days. Within that time, you can ask the court, by motion with notice to the Department, to send the remainder to an independent laboratory you choose (§ 18.2-268.7). If no motion is made in time, the Department destroys the sample unless the Commonwealth has asked for its return. This is one reason to call a lawyer early.
• The analyst: the Commonwealth must give you the certificate of analysis “no later than 28 days prior to the hearing or trial,” along with notice of your right to object. To require the analyst to testify, you must object in writing “no more than 14 days after the certificate and notice were filed with the clerk by the attorney for the Commonwealth or the objection shall be deemed waived” (§ 19.2-187.1).

Refusing the blood test has its own consequences. Under § 18.2-268.3, unreasonably refusing a blood sample after a DUI arrest is a civil offense. For a first offense, the court must suspend your license for one year, on top of any administrative suspension. A refusal within 10 years of a prior DUI or refusal carries a three-year loss of license. A refusal also carries six DMV demerit points, which remain for two years from the offense date. The refusal normally stays on your Virginia driving record for 11 years.

The administrative suspension works differently in a drug case. Under § 46.2-391.2, your license is suspended at the time of arrest (seven days for a first offense) if a breath test shows 0.08 or more (0.02 or more for drivers under 21), or if you refuse the breath or blood test. A blood result does not trigger that suspension. So if your breath test was under 0.08 (0.02 for drivers under 21), or you gave only blood, the blood result will not suspend your license before trial, although the DUI charge itself goes forward.

Defenses to Drug DUI

To convict you, the Commonwealth has to prove beyond a reasonable doubt that you drove or operated a motor vehicle and that, at the time, you were impaired by a drug, or by alcohol and drugs together, or had a blood level at or above one of the four limits. These are the questions we work through with you:

• Was the stop lawful? An officer needs a legal reason to stop you. If the stop or the arrest was not lawful, we can ask the court to suppress the evidence that came from it.
• What did the officer actually see? We compare the officer’s report with the video from the cruiser or body camera: your driving, your speech, your balance and how you answered questions.
• What do the field tests show? Fatigue, injuries, medical conditions, nerves and the road surface can all affect how a person performs. We look at how the tests were given and what they really show.
• Does anything connect the drug to impairment? In an impairment prosecution under clause (iii) or (iv) of § 18.2-266, § 18.2-268.10 requires other competent evidence linking the drug to impaired driving before drug-test results are admissible. A positive blood result alone does not do that. The statutory exception is for a prosecution under clause (v).
• Was the blood handled correctly? We check who drew the blood, how the vials were sealed and labeled, the chain of custody, and whether the certificate of analysis was provided and filed on time.
• Should the sample be tested independently? If an independent test could help, the motion has to be filed within the 90-day preservation period after DFS completes its analysis. We decide this with you early.
• Is there a medical or prescription explanation? Your prescriptions, dosage, timing and medical history can explain what the officer saw. We gather those records with you.

These questions are the backbone of a trial defense. They also shape our discussions with the prosecutor when the evidence linking a drug to impairment is thin.

Mitigation Is a Separate Conversation

Challenging the charge and presenting mitigation are two different things, and we keep them separate. Mitigation does not argue about the evidence. It shows the court who you are: your driving record, your work and family, the steps you have taken since the arrest, and, where it fits, a substance abuse assessment or treatment. Under § 18.2-271.1, a person charged with DUI may enter the Virginia Alcohol Safety Action Program (VASAP) before trial. VASAP covers drug cases as well as alcohol cases. We talk through both paths with you before court, so you can decide how you want to proceed.

Penalties for Drug DUI

A first-offense drug DUI is a Class 1 misdemeanor under § 18.2-270, with a mandatory minimum fine of $250 and a maximum of 12 months in jail and a $2,500 fine (§ 18.2-11). The mandatory jail terms for a first offense in § 18.2-270(A) are tied to blood alcohol level, so they do not apply to a conviction based only on drugs. Other enhancements in § 18.2-270, such as having a minor in the vehicle, can still apply.

A conviction also costs you your license for one year under § 18.2-271. The court may grant a restricted license for purposes such as work, school and medical care, conditioned on enrolling in VASAP within 15 days (§ 18.2-271.1). For a first DUI conviction based only on drugs under § 18.2-266(iii) or (v), the court may require an ignition interlock as a condition of a restricted license (§ 18.2-270.1(B)). Interlock is required for a conviction involving alcohol and drugs together, or for a second or subsequent DUI offense. We explain the restricted-license options and interlock requirements as part of preparing your case.

Repeat offenses carry mandatory jail whatever the substance. Under § 18.2-270, a second offense within five years carries a mandatory minimum of 20 days in jail, and within five to 10 years, 10 days, each with a mandatory minimum fine of $500. A second offense within 10 years also means losing your license for three years. A third offense within 10 years is a Class 6 felony with a mandatory minimum of 90 days, or six months if all three offenses were within five years, and a $1,000 minimum fine.

At the DMV, “Driving under the influence of drugs” is a six-point conviction that stays on your Virginia driving record for 11 years. A DUI conviction stays on your criminal record permanently. Our DUIs in Virginia page explains DUI penalties at every level, and our Fairfax DUI penalties page explains how they apply in Fairfax.

Offenses Related to Drug DUI

A drug DUI arrest can come with other charges. If drugs were found in the car, you may also be charged with possession, which is a separate offense with its own elements and its own defenses; our drug crimes page explains those charges. A refusal is charged separately under § 18.2-268.3. If alcohol was involved too, the charge may be brought under clause (iv), which changes the ignition interlock rules described above. Our Virginia DUI lawyer page covers alcohol DUI, breath tests and the rest of a DUI case.

Why Drivers Across Northern Virginia Call Us

Reckless driving and DUI defense are central to our practice. Our attorneys represent drivers in Fairfax, Prince William, Arlington, Loudoun, Stafford, Alexandria and Fauquier.

Your case is handled by a specific attorney, supported by collaboration and insight from the rest of our team. We bring that experience to reviewing the stop, the officer’s observations and the testing in your case.

Clients have left us about 500 Google reviews.

For DUI charges in a specific county, see our pages on Fairfax County DUI, Prince William County DUI, first-offense DUI in Arlington and Loudoun County DUI.

Frequently Asked Questions

Talk With a Virginia Drug DUI Lawyer

A drug DUI charge can feel especially confusing when you were taking medication as prescribed. You don’t have to sort it out alone. At NOVA Defenders, S&R Law Firm, we will listen to what happened, examine what the Commonwealth has to prove and explain what the blood evidence actually shows. We will talk through the defense, your driving privileges and the steps worth taking before court, and tell you our fee up front.

Call 703.273.6431 at any hour and you will speak with a real person. The consultation is free, and you can also contact us online.

Reviewed by attorney Ryan Rambudhan | Updated October 21, 2026