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The Forensic Toxicology Specialists
Phone: (916) 366-3113
FAX (916) 366-3917


9845 Horn Road, Suite 150, Sacramento, CA 95827

Click on the links below to access the following:

DO NOT e-mail us confidential credit card information. Please be aware that we do not accept personal checks. Please contact us for payment options.

If you have discovery to send, e-mail is preferred; however, FAX or regular mail is acceptable.

Drug Detection Laboratories, Inc., established in 1984,  provides the highest quality and most sensitive drug and alcohol testing for courts, counselors, hospitals, public and private attorneys. Expert data interpretation and testimony is often critical, and may be provided by our experienced staff.

This site is intended to provide general information regarding drug and alcohol testing for anyone who may be interested.  Consultation with a qualified forensic toxicologist is always recommended.

Meet the Drug Detection Laboratories Staff           DDL was founded in 1984 by Jeffery and Susan Zehnder, Forensic Toxicologists who now have over 45 years of combined experience in the Forensic Toxicology field. DDL provides a full service...   more...


Forensic Retesting  DDL provides referee re-testing for the forensic community.  This testing is sensitive and conclusive for alcohol and drugs in blood and urine, and tests solid dose materials (pills, powders, syringes, clandestine laboratory samples, etc.)... more...

Alcohol Resources and Breath Testing Devices  Click on this link to access information on alcohol, breath testing devices, manufacturers information, alcohol's effects, and the definition of a "standard drink"......more

Links to many resources including Medline, TOXNET, NIDA, and many others..

Drug Detection Labs also can provide customized analysis of various items as directed by the customer. We can even analyze beverages for alcohol content.

Please contact us for information.


DUI and DUID Investigation  For links to information about Standardized Field Sobriety Testing (SFST's), the Drug Recognition Evaluation (DRE) process, and other information related to DUI and DUID evaluation......more...

Drug and Drug Testing Information  The detection times in urine are significantly greater than detection times in blood, which is also generally much more expensive. The presence of a drug or drugs in urine does not...  more...

DUI / DUID Case Reviews    DDL toxicologists can provide scientific evaluation of DUI involving alcohol and drugs, and in other criminal cases such as clandestine drug manufacture or drug facilitated sexual assaults. 

Desire a recommendation for discovery documents? Click here!



Home - Links - Forensic Retesting - Staff CV's and Contact Info -
Drug Testing Information - About Drug Detection Laboratories, Inc.  
DRE Drug Matrix Chart - FST's - Consulting  E-Mail

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