1075 Rankin Drive, Troy, MI 48083 248-858-8700 Fax 248-858-9750 Call to Test 248-850-1661


Increase in productivity, employee morale, and employee retention


Word spreads fast!

The absence of a drug testing program tells abusers a company is a good place to hide. The percentage of impaired workers is higher in smaller businesses (fewer than 500 employees)-and so is the cost of workers’ comp, time lost, inventory shrinkage and accidents.

Doing nothing will cost you plenty!

The costs of ignoring the problems are huge-and preventable. Pre-employment screening is the first step, and a professional and fair program of random testing is an investment in a happier, safer, more profitable team.


Pre-employment testing is good, but not nearly enough. Random testing is the only real deterrent. After all, why take the risk of drug use on Tuesday night when Wednesday may bring a tap on the shoulder?


We at All County Testing firmly believe that both employers and employees deserve a safe work environment. With our help, your company will not only enjoy increased safety, but also the possibility of lowered health care costs. Many also experience a decrease in the OSHA incident rate which may lead to savings in workman’s compensation costs. Other potential benefits to investing in our services are an increase in productivity, employee morale, and employee retention. We enable employers to make these changes a reality by helping them develop and administer a Drug Free Workplace program with the least amount of hassle to both the employer and employee.

With All County Testing you can expect

Outstanding Personal Service
Talk to an actual human being who knows you and your company.

No more wasted time in a waiting room full of sick people.

Fastest results in the industry. Sent directly to your inbox the moment they are released.

Knowledgeable and credentialed drug testing partner for both DOT and Non- DOT employees.


Founded by Nick Guevarra, an entrepreneur and financial planner for more than 25 years. All County Testing is a Metro Detroit based organization. Established to help companies solve the problems associated with substance abuse and take the pain out of drug testing.

Nick is a certified Breath Alcohol Technician and a DATIA Certified Professional Collector, trained in drug and alcohol testing for DOT and non-DOT businesses. Nick understands the challenges businesses face - particularly those related to safety and productivity.

Our Testing

All drug and alcohol testing is conducted in accordance with Federal Drug-Free Workplace guidelines and standards set by the Drug and Alcohol Industry Association.

Our Credentials

All County Testing is a proud member of DATIA & SAAPA, the industry's leading professional associations.