an Accredited Collection Facility


Welcome to Know Before You Go (KBYG) Drug & Alcohol Testing, your complete drug screening resource. KBYG provides pre-employment, random testing, post-accident, and individual screening services including a variety of drug and alcohol testing.


Industry-Leading Substance Testing

We provide instant testing for pre-employment candidates. We also provide services for DOT and Non-DOT Post Accident Reasonable Suspicion/Cause.

Breathalyzer Test

Breath Alcohol Testing

Accuracy is key

Gazing Out the Window

Post-Accident | Reasonable Cause Testing

When it matters the most

Medical form with stethoscope

DOT & Non-DOT Testing | On-Site Testing available

A Happier, Healthier You

Know Before You Go is compliant with the Department of Transportation Drug & Alcohol Testing for transportation companies; as well as, Non-DOT Drug & Alcohol Testing.

We offer DOT 5 Panel and 10 Panel Lab Based Drug Tests at your locations. 

Non-DOT Rapid 5 panel (Cocaine, Marijuana, Amphetamines, Methamphetamines, and Opiates).


If "Non-Negative" Specimen, specimen must be sent to lab for confirmation.


At KBYG, we specialize in designing and implementing a complete Drug & Alcohol Employee Screening Program for the convenience of our customers. Our customized screening programs consist of a full range of services designed to meet the needs of any size company.


Proud member of 

Professional.   Efficient.   Accurate.  On-Site.  Mobile.   Drug   Testing.

Work Desk


Come Visit

Mon - Thur: 8am - 5pm
Fri: 8am - 4pm
Sat: 9am - 1pm
Sun: Closed



990 State Hw 5, Suite 107
McKinney, TX 75069

Cell: 214-856-4441

Office ; 469-352-7560


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