Phone Icon 1.800.799.7640 1.800.799.7640

Reliable Employee Screening Options

A.O.S offers a full menu of services including drug and alcohol testing, medical review officer (MRO) services, DOT consortium services, pulmonary function test, respirator fit tests and physical capacity profiles all at affordable cost-effective prices. Our professional and knowledgeable staff can customize a program to meet your needs.

A.O.S offers state of the art, user-friendly, web-based software that provides security and flexibility in result reporting, statistical information and managing your screening process.

A.O.S offers the following services:

  • D.O.T and Non D.O.T Drug and Alcohol Testing
  • Drug-Free Workplace Programs
  • Substance Abuse Policies 
  • Rapid results or Lab based testing
  • Electronic Reporting
  • Hair Testing
  • Student Testing Programs
  • Legal/Court Services 
  • D.O.T Consortium Services
  • Random Testing Programs
  • Collection only for other Laboratory or Consortiums
  • Certified Professional Collectors and Breath Alcohol Technicians
  • Pulmonary Function Test/Spirometry 
  • Fit Tests 
  • Mobile Collections
  • Physical Capacity Testing (McPherson Only)

Contact us at 1.800.799.7640 to learn more about our services and how we can help you create a safe, productive and cost-effective workforce.

Woman in Blue Scrubs

Contact one of our offices to learn more about our services.

El Dorado

111 W. Ash
PO Box 783
El Dorado, KS 67042
(316) 321-3313
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McPherson

1205 S. Main
McPherson, KS 67460
(620) 504-6614
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CHS Refinery

Only open to CHS contractors
CHS Campus
McPherson, KS 67460
(620) 241-1856
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Siloam Springs

806 South Mount Olive
Siloam Springs, AR 72761
(479) 524.6602
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