Criminal Defense for Drug DUI Charges in San Diego County
A drug DUI charge under California Vehicle Code 23152(f) isn’t the same as an alcohol DUI. There’s no breathalyzer, no legal limit, and no single number the prosecution hangs its case on. That makes these cases more subjective and more complex to defend. At Lee Law Group DUI & Criminal Attorneys, we’ve been handling criminal defense cases in San Diego County courts since 2007, and we know how local prosecutors build and pursue DUID charges.
Ernest J. Lee Sr. founded this firm after working at four different San Diego-area law firms, giving him a firsthand view of how criminal cases are constructed and challenged in this jurisdiction. Two of our attorneys are recognized on the Super Lawyers or Rising Stars lists, and our clients consistently rate us five stars. More important to us: clients get individual attention from attorneys who live and work in this community.
Facing a drug DUI in San Diego? Call Lee Law Group DUI & Criminal Attorneys at (619) 975-2033 to discuss your situation and your options before deadlines pass.
A Client-First Approach to DUID Defense
A DUID arrest turns your life upside down fast. We don’t treat that as background noise. Ernest Lee Sr. built Lee Law Group DUI & Criminal Attorneys around one principle: working people deserve the same quality of legal defense as anyone else, without paying premium-firm prices. That means you work directly with experienced attorneys, not support staff, and you stay informed at every stage of your case.
We communicate clearly, prepare thoroughly, and pursue every available defense without making promises we can’t keep. Our attorneys don’t like to lose, and they bring that mindset to every case.
Why Choose Lee Law Group DUI & Criminal Attorneys?
Affordable Justice
Everyone deserves a powerful defense. We’re committed to making fierce, effective representation accessible and affordable.
Experienced and Unyielding
With 20 years of legal experience, we’ve honed the instincts, strategy, and grit needed to deliver results—even in the toughest situations.
Client-Centered Protection
When you hire us, you’re under our wing. We take on your burden, reduce your anxiety, and give you the strength of knowing someone has your back.
Strength with Compassion
We combine inner steel with heartfelt empathy. Our clients aren’t just cases—they’re people who deserve to feel protected, supported, and understood.
Relentless Advocacy
We fight for our clients with unshakable determination. Like a pitbull in the courtroom, we don’t back down—ever—until the judge says it’s over.
What California’s Drug DUI Law Actually Covers
California Vehicle Code 23152(f) makes it a crime to drive while under the influence of any drug. That includes illegal drugs, recreational marijuana, prescription medications, and over-the-counter products. A valid prescription doesn’t shield you from charges. If a drug impaired your ability to drive, the law treats it as a DUID regardless of whether you had every right to take it.
The prosecution doesn’t need to show a specific drug level in your blood. They must prove that your mental or physical abilities were impaired to the point you couldn’t drive with the caution of a sober person. That standard is intentionally subjective, which is both the challenge and the opening for a strong defense.
Penalties for a DUID conviction in California:
Up to 6 months in jail on a first misdemeanor offense
A felony charge if someone was injured, if you have a prior felony DUI, or if you have three or more prior misdemeanor DUI convictions
Beyond the courtroom, a DUID conviction can raise your auto insurance rates, put professional licenses at risk, and create problems on employment background checks. The consequences extend well past the sentence itself.
How Drug DUI Investigations Unfold in San Diego
When a San Diego officer suspects drug impairment, the investigation looks very different from an alcohol DUI stop. Without a breath test, police rely on observations, field sobriety tests, and a Drug Recognition Expert (DRE) evaluation. A DRE conducts a 12-step examination measuring pupil size, blood pressure, and muscle tone, among other factors, then offers an opinion on what category of drug caused the impairment. That opinion is subjective, and it’s challengeable.
California’s implied consent law requires drivers to submit to chemical testing after a DUI arrest. In drug impairment cases, that means a blood test, since breath tests can’t detect drugs. Refusing can result in license suspension and may be introduced against you in court. The blood sample then goes to a lab, where the chain of custody, handling procedures, and testing protocols all become part of the record a defense attorney can examine.
A DUID arrest in San Diego triggers two separate legal proceedings: the criminal case at the San Diego Central Courthouse and an Administrative Per Se (APS) hearing at the San Diego DMV Driver Safety Office. The APS hearing challenges your license suspension, but you have only 10 calendar days from the date of arrest to request it. Miss that window and your license is suspended automatically.
Why DUID Cases Can Be Effectively Challenged
Because there’s no per se drug limit, the prosecution’s case rests heavily on subjective officer observations and expert interpretation of toxicology results. That creates several angles a skilled DUID attorney can pursue.
Defense strategies may include questioning whether the traffic stop was lawful, contesting the reliability of field sobriety tests, attacking the DRE evaluation’s methodology, and challenging the blood test on chain-of-custody, contamination, or lab protocol grounds. Medical conditions, fatigue, or anxiety can produce physical signs that mimic drug impairment without any actual impairment present.
THC, the active compound in marijuana, can remain detectable in the bloodstream for days or weeks after any intoxicating effect has ended. A positive blood test doesn’t automatically prove impairment at the time you were driving. That distinction is central to many marijuana-related DUID defenses. California law also provides that in some cases a court may permit enrollment in a licensed drug rehabilitation program in lieu of part or all of a jail sentence.
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“I can’t thank Ernest Lee enough for their incredible work on my case. From the beginning, they were professional, knowledgeable, and truly dedicated to getting the best possible outcome for me.”
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“Beyond Grateful!”
“I am beyond grateful for the exceptional legal services I received from Mr. Lee. From the moment I reached out, he provided a level of professionalism, expertise, and dedication that truly made a difference.”
Most DUID cases in San Diego proceed through the San Diego Central Courthouse, handled by prosecutors in the San Diego County District Attorney’s dedicated DUI unit. These prosecutors handle drug DUI cases almost exclusively and are specifically trained on DRE protocol testimony. That focus means the prosecution is experienced. Your attorney should be too.
Lee Law Group DUI & Criminal Attorneys has appeared in San Diego County courts consistently since 2007. Ernest Lee Sr.’s background at four different firms in the area before founding Lee Law Group DUI & Criminal Attorneys built a working knowledge of how this local system operates, from how the DA’s office prepares its cases to how judges here approach the evidence. DUID enforcement has also grown since California legalized recreational marijuana, and we’ve followed those shifts closely.
Take Action Before Your Options Narrow
The 10-day deadline for requesting an APS hearing means the clock starts the day of your arrest. Waiting to contact an attorney can cost you options that can’t be recovered later. We’re reachable by phone and through our online contact form, and we make it straightforward to have a real conversation about your case.
Lee Law Group DUI & Criminal Attorneys provides personalized, transparent representation for DUID charges throughout San Diego. We handle the complexity so you understand exactly where you stand and what we’re doing about it. Call us at (619) 975-2033 to speak with a DUID lawyer who can give your case the attention it deserves.
Marijuana & Prescription Medication DUID Charges
Recreational marijuana is legal in California. Driving while impaired by it is not. Many people arrested for a marijuana-related DUID assume that legal use protects them. It doesn’t. California Vehicle Code 23152(f) applies regardless of whether you obtained the marijuana legally, and prosecutors don’t need to show illegal behavior, only impaired driving.
What makes marijuana DUID cases particularly contested is the absence of a set THC blood concentration limit. There’s no number that automatically establishes guilt, so the prosecution must rely on subjective evidence: officer observations, the DRE evaluation, and toxicology results. Because THC can remain detectable in the blood for days or weeks after any impairment has ended, a positive test doesn’t tell the court whether you were actually impaired while driving. A DUID attorney can present evidence and, where appropriate, expert testimony to challenge that inference directly.
Prescription medications raise similar issues. Opiates, anti-anxiety drugs, and sleep aids can all form the basis of a DUID charge even when taken exactly as a physician directed. The prescription itself isn’t a defense if the drug affected your ability to drive. Defendants in these situations may be able to offer medical evidence or expert testimony to show their driving ability wasn’t actually impaired at the time of the stop. Each case turns on its specific facts, which is why a careful review of the evidence matters so much in prescription medication DUID defense.
