Many employers require their employees to submit to drug testing before and/or after being hired. In fact, it is estimated that 40 percent of U.S. workers are currently subjected to drug testing during the hiring process. For those in the testing industry, here’s your chance to learn all about workplace drug testing from some of the top Twitter feeds posting about this topic.

Why this list? Well, it’s based on Twitter data culled according to content, follower/following ratios, frequency of tweets, blog popularity, the opinions of others in the field and our own subjective judgment.

One note: Some influential voices may not be included, either because they don’t have active Twitter accounts, or because they only tweet about drug testing sporadically. Our goal is to provide the best possible stream of news and insight about employee drug testing.

Did we miss somebody? Let us know!

American Screening
A drug test and medical device manufacturer.

Confirm Biosciences
A point-of-care medical diagnostics supply company that provides lab-based testing services.

CleanFleet
A drug screening company that assists businesses in establishing and maintaining a drug-free workforce.

Free Download: What Your Company's Drug and Alcohol Policy May Be Missing (and How to Get It Right)


DNA Legal
A drug, alcohol and DNA testing firm in the U.K.

Drug Testing Inst
A drug and alcohol testing institute in Australia.

Health Street
A drug testing and DNA testing company, and the company behind VH1’s Swab Stories.

HireSafe
A company that specializes in employment background screening, drug testing and attitudinal integrity testing.

HR ProFile, Inc.
A background and drug testing company located in Cincinnati, Ohio.

StateDrugTestingLaws
The official Twitter feed for a website that provides up-to-the-minute information on state drug testing laws.

SureHire Occ Testing
An occupational health testing company that offers services across Canada.

USA Mobile Drug Test
A workplace drug testing company that provides mobile service.

Validity Screening
An employment screening company that provides accurate employment screening and drug testing services to companies.