24/7 Mobile and On-Site Drug, Alcohol, and DNA Testing Services.
GC77 LABS — Driven by Service. Defined by Trust
At GC77 LABS, we bring certified, mobile and on-site drug and alcohol testing to your doorstep — serving employers, schools, transportation companies, and government agencies across Michigan.
As a CLIA Waived company with active accounts with industry leaders, we deliver both accuracy and convenience.
From DOT-compliant testing to rapid drug screens, DNA services, and more — we make compliance simple, mobile, and reliable.
Call today to schedule drug and alcohol testing, 7 days a week:
(517) 442-8709
Or visit: gc77labs.org
Our Mission
To serve businesses, and individuals with reliable testing solutions that promote safety, truth, and well-being.
Drug and Alcohol SCREENING Services
DOT Drug Testing
Department of Transportation (DOT) drug testing services to help you comply with federal regulations and keep your drivers and passengers safe. Our testing program is designed to meet all DOT requirements.
Non-DOT Drug Testing
Non-DOT drug testing services for employers, individuals, and organizations not regulated by the Department of Transportation. We offer 5-panel, 10-panel, and expanded options tailored to your needs. Accuate, confidential results with flexible scheduling.
Breath Alcohol Testing (BAT) (Breathalyzer)
Instant, on-the-spot results to determine current blood alcohol concentration (BAC). Ideal for workplace testing, post-accident, court compliance, or personal use.
Pre-Employment Testing
Our pre-employment drug testing services help you create and maintain a drug-free workplace. We offer a range of screening options and can customize a program to meet your specific needs.
Random Testing
Random drug testing is an effective way to deter drug use in the workplace. Our program is designed to be fair and impartial, ensuring compliance with state and federal regulations.
Post-Accident Testing
Our post-accident drug testing services can help you determine whether drugs or alcohol played a role in a workplace accident. We offer fast and accurate testing to get you the answers you need.
Reasonable Suspicion Testing
If you suspect an employee is under the influence of drugs or alcohol, our reasonable suspicion testing services can help you confirm your suspicions. We offer discreet and confidential testing to protect your employees and your business.
ETG Alcohol Testing
ETG Alcohol Testing - Ethyl Glucuronide Alcohol Testing, a highly sensitive test that detects alcohol consumption for up to 80 hours. Results in 24-48 hours.
Rapid Drug Testing
Need fast, accurate results? Our rapid drug testing services provide same-day screening results for a wide range of substances including 5-panel and 10-panel drug tests. DOT and Non-DOT options available.
Drug-Free Workplace Programs
Our drug-free workplace programs can help you create a culture of safety and responsibility in your workplace. We offer training, policy development, and other services to support your program.
DNA Screening
DNA TEST OFFERED BY GC77 LABS:
Paternity Testing – Determines the biological father of a child (court-admissible & personal options).
Maternity Testing – Verifies the biological mother of a child.
Siblingship Testing – Confirms whether two individuals are full, half, or unrelated siblings.
Grandparentage Testing – Determines if a person is biologically related to their grandchild.
Avuncular Testing – Establishes a biological relationship between a child and an alleged aunt/uncle.
