254 ARTICLES · UPDATED WEEKLY

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Field guides, regulatory updates, and product breakdowns from the team behind American Screening Corporation's drug testing supplies.

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How Long Do Drugs Stay in Your Blood? Detection Windows by Substance

Sep 5, 2026 ·9 min read

How Long Do Drugs Stay in Your Blood? Detection Windows by Substance

Of the four specimen types used in drug testing, blood has the shortest detection window by far. A urine test can pick up marijuana...

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Does Ritalin Show Up on a Drug Test? Methylphenidate Explained

Sep 5, 2026 ·8 min read

Does Ritalin Show Up on a Drug Test? Methylphenidate Explained

Employers and treatment program staff often assume that any stimulant medication will light up a standard drug panel the same way. That assumption causes...

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Does Narcan Show Up on a Drug Test? Naloxone and Screening Panels

Sep 5, 2026 ·7 min read

Does Narcan Show Up on a Drug Test? Naloxone and Screening Panels

Employers, treatment program staff, and safety managers ask this question more often as naloxone becomes a fixture in workplace first aid kits, school nurse...

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Creatinine Levels on a Drug Test: What Low, Normal, and Dilute Mean

Sep 5, 2026 ·10 min read

Creatinine Levels on a Drug Test: What Low, Normal, and Dilute Mean

A urine drug test does more than look for drug metabolites. Every laboratory that processes a federally regulated specimen, and most labs that process...

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Coast Guard Drug Testing Requirements: What Maritime Employers Must Run

Sep 5, 2026 ·10 min read

Coast Guard Drug Testing Requirements: What Maritime Employers Must Run

If you operate commercial vessels, manage a fleet, or run a marina employing credentialed mariners, the Coast Guard does not leave your drug and...

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THC Breathalyzers: Where Marijuana Breath Testing Actually Stands

Sep 3, 2026 ·10 min read

THC Breathalyzers: Where Marijuana Breath Testing Actually Stands

Every safety manager who has dealt with an alcohol breathalyzer eventually asks the same question about marijuana. If a handheld device can tell whether...

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Split Specimen Drug Tests: How the Split Sample Process Works

Sep 3, 2026 ·8 min read

Split Specimen Drug Tests: How the Split Sample Process Works

Every DOT regulated urine drug test is a split specimen collection. That single design choice, built into 49 CFR Part 40, gives an employee...

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School Bus Driver Drug Testing Requirements Explained

Sep 3, 2026 ·7 min read

School Bus Driver Drug Testing Requirements Explained

Most people who drive a school bus hold a commercial driver's license, usually with a passenger endorsement and a school bus endorsement added on...

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PHMSA Drug and Alcohol Testing: Pipeline Operator Requirements

Sep 3, 2026 ·10 min read

PHMSA Drug and Alcohol Testing: Pipeline Operator Requirements

Pipeline operators do not fall under the drug testing rule most people know best. Trucking answers to the Federal Motor Carrier Safety Administration, aviation...

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Metformin and Drug Tests: The Amphetamine False Positive Explained

Sep 3, 2026 ·7 min read

Metformin and Drug Tests: The Amphetamine False Positive Explained

Metformin is one of the most commonly prescribed medications in the country, used by millions of people to manage type 2 diabetes. It is...

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Hospital Employee Drug Testing: Panels, Policies, and Diversion

Sep 3, 2026 ·10 min read

Hospital Employee Drug Testing: Panels, Policies, and Diversion

Yes, hospitals drug test employees, but not the way most people assume. There is no single federal law that requires it. What actually drives...

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