Illegal Drug DUI

ILLEGAL DRUG DUI

Illegal Drugs in a Driver's System as a Violation of Arizona DUI Laws

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Prior Use vs Impairment With Illegal Drugs in Phoenix, AZ

KOPLOW LAW FIRM - DUI Lawyer IN PHOENIX and scottsdale, AZ

Some Drugs Can’t Be Prescribed. When such drugs are in a driver’s system, their presence alone, is a violation of Arizona’s DUI laws.

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Unlike Prescription Medication and Medical Marijuana DUI cases, the primary legal issue in illegal drugs DUI cases is usually not impairment – but rather prior use. 
Arizona DUI Illegal Drugs
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Sober DUI Violations

Your doctor can’t give you a prescription to take to the pharmacy to get a bottle of Cocaine, Bath Salts, Ecstacy, Black Tar Heroine, or Spice. These drugs are considered per se illegal. That is, proof them in your blood is in-and-of-itself proof of guilt.


Here is the kicker: If these drugs are found in your system the considers this a DUI violation – even if you are not impaired. That’s right, Arizona makes per se use of an illegal drug the basis for a sober DUI. However, the good news is…that is not the end of the story.

Arizona DUI Illegal Recreational Drugs

Measurable Amounts in Blood

Arizona DUI Illegal Recreational Drugs Measurable Amounts in Blood

The fundamental premise of prosecuting a person for a per se violation of having an recreational drug in your system while driving is – the government will be able to detect a measurable amount of the drug in your blood. However, easier said by them then done.


Understand this: Measuring the amount of a drug, in blood, requires the ability to distinguish between signal versus noise. Here, the signal is the data you desire to obtain. However, the instrument produces other information that can be difficult to different from the signal, but has not value. That is noise.

Drug blood testing is performed using a technique called mass spectrometry. There are many reliable forms and instruments that utilize this methodology. Used properly, mass spectrometry can distinguish signal from noise. However, the used properly part is where the problem occurs.


If you are accused of a DUI, based upon having an illegal recreational drug in your system, then the government’s chemical test becomes their end-all-be-all evidence. Thus, shouldn’t you find out if the way they created this evidence, was good enough to distinguish between real evidence and merely noise? 

"Lawrence represents very high-profile clients who greatly depend on a good outcome, and this guy will deliver. 

This is a prosecutor's worst nightmare, and it should be that way if you need an attorney."

- David E.

Real Client's Husband, Phoenix, AZ

Hiring an Illegal Drug DUI Attorney in Phoenix, AZ

Arizona DUI law is extremely complicated and has severe consequences. DUI law is commonly referred to as a minefield. An attorney must be competent in the Arizona Rules of “Criminal” Procedure, the Arizona Rules of Evidence, the United States and Arizona Constitutions, and the Arizona Department of Motor Vehicles Rules and Regulations.


An attorney cannot do anything for you unless he or she has extensive experience in these areas.  Police officers are only human and do commit legal errors.  However, only an experienced DUI attorney will be able to find these errors and use them to help his or her client.


You should choose an experienced DUI attorney for the same reason you should choose a qualified doctor. If you break your wrist, you go to a doctor that specializes in wrist injuries. When you are charged with a DUI, you should hire a qualified DUI attorney.


An experienced Arizona DUI attorney can analyze your case for legal errors and defenses. He or she can have blood samples independently analyzed, look for suppression issues, review calibration / COBRA records of breath machines, find the right expert witnesses for your trial, and assist you with your driver’s license issues.

For more information, call our office at (602) 494-3444 or visit our contact page.
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What Real People Are Saying

That is, DUI cases actually dismissed. Verifiable not guilty verdicts. Blood alcohol evidence truly suppressed as witnessed by judges, other lawyers, and newspapers.

Real Client's Husband, Phoenix, AZ

"Lawrence represents very high-profile clients who greatly depend on a good outcome, and this guy will deliver. 

This is a prosecutors' worse nightmare, and it should be that way if you need an attorney."

 - David E.

REAL CLIENT, PHOENIX, AZ

It was miracle!... A lot of people don't really understand the benefit of having an attorney who used to be a prosecutor. They know all the little tricks and scare tactics the state has as opposed to just hiring an attorney who is a little fish in a big pond."

 - Joe C.

Contact Us Today!


For more information, call our office at (602) 494-3444 or fill out the form and we will get back to you.

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Arizona DUI Blog


By Lawrence Koplow 09 Sep, 2020
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The appearance of science can become the appearance of truth - even when the junk science is employed. Do we provide enough bandwidth to debunk these unreliable scientific claims? The post A Legal Bandwidth Problem appeared first on Lawrence Koplow: Arizona DUI Attorney | Phoenix & Scottsdale.
By Lawrence Koplow 27 Aug, 2020
Measuring is different from counting. However, in forensic science the two are often suggested to be the same. This needs to change. MEASURING Measuring is the assignment of a number, and all the uncertainties of that of that number, to something.  The purpose of assigning a number is to give meaning to the object measured. […] The post Measuring and Counting | Forensic Science appeared first on Lawrence Koplow: Arizona DUI Attorney | Phoenix & Scottsdale.
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