DRE Checklist, Step 3: Preliminary Examination
A Drug Recognition Expert (DRE) must follow a checklist that breaks down into twelve components. The next few blogs will examine each step in detail.
Step 3: Preliminary Examination
This step begins with an extensive physical contact with the subject. The purpose of this contact is to look for any evidence of a medical compliance that would warrant terminating the evaluation and summoning medical assistance. The DRE will:
- Ask for a series of questions;
- Examine the eyes to determine if the pupils differ significantly in size;
- Check for an estimation of the angle of onset of nystagmus.
This will allow the DRE to evaluate if the subject is under the influence of alcohol alone. The DRE will check the pulse and if necessary call for medical attention. This will terminate the evaluation, but otherwise the DRE will proceed with the evaluation.
If you or a loved one has been charged with a DUI with drugs, call our offices today for a free consultation. Criminal Defense Attorney James N. Dicks specializes in DUI cases. As a member of The National College for DUI Defense and with over 25 years of legal experience, he can help you.
Source: A training manual for the Drug Evaluation and Classification Program
Don’t Waste Any Time!
Call us today for a FREE Consultation
(760) 630-2000


- Criminal Law Expert - Led by a Board Certified Criminal Law Specialist. Read More
- 100s of Cases Tried - Since 1990, James Dicks has represented hundreds of clients. Read Bio
- Client Approved - Read our online testimonials from satisfied jD LAW Clients. Yelp Reviews


- October 30, 2023
Working with Expert Witnesses in Defense Cases - October 20, 2023
The RICO Act: Defending Against Racketeering … - October 10, 2023
Child Pornography Charges: Legal Defenses and …