254 ARTICLES · UPDATED WEEKLY

News

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

More from the lab notebook

Page 8 of 22
Does Gabapentin Show Up on a Drug Test?

Aug 18, 2026 ·7 min read

Does Gabapentin Show Up on a Drug Test?

Gabapentin does not show up on a standard drug test. It is not one of the drugs targeted by the immunoassay panels used in...

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Does Fentanyl Show Up on a Standard Drug Test?

Aug 18, 2026 ·7 min read

Does Fentanyl Show Up on a Standard Drug Test?

The short answer is no, not usually. A basic 5-panel or 10-panel drug test, the kind most employers, staffing agencies, and clinics have relied...

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EtG False Positives From Hand Sanitizer: What the Research Actually Shows

Aug 18, 2026 ·9 min read

EtG False Positives From Hand Sanitizer: What the Research Actually Shows

Someone in a monitoring program uses hand sanitizer a dozen times during a shift, gargles with mouthwash before a meeting, or drinks a bottle...

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Benzodiazepine Drug Test: BZO Panel Detection Times and Gaps

Aug 18, 2026 ·7 min read

Benzodiazepine Drug Test: BZO Panel Detection Times and Gaps

Benzodiazepines are not part of the core federal five panel drug test. Amphetamines, cocaine, marijuana, opiates, and phencyclidine make up that base panel, and...

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Amphetamine vs Methamphetamine Drug Test: How AMP and mAMP Panels Work

Aug 18, 2026 ·7 min read

Amphetamine vs Methamphetamine Drug Test: How AMP and mAMP Panels Work

A urine drug screen that reports both amphetamine (AMP) and methamphetamine (mAMP) confuses a lot of people, including some employers who read the printout...

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TCA Drug Tests Explained: Why Tricyclic Antidepressants Appear on Screening Panels

Aug 18, 2026 ·6 min read

TCA Drug Tests Explained: Why Tricyclic Antidepressants Appear on Screening Panels

A TCA drug test screens a urine specimen for tricyclic antidepressants such as amitriptyline, nortriptyline, doxepin, and imipramine, typically at a 300 or 1,000...

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Does Suboxone Show Up on a Drug Test? Buprenorphine Panels Explained

Aug 18, 2026 ·8 min read

Does Suboxone Show Up on a Drug Test? Buprenorphine Panels Explained

In most cases, no. Suboxone's active ingredient, buprenorphine, is a synthetic opioid that standard 5 panel and 10 panel urine opiate screens are not...

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Drug Testing Programs for Staffing Agencies: Speed, Volume, and Client Requirements

Aug 18, 2026 ·9 min read

Drug Testing Programs for Staffing Agencies: Speed, Volume, and Client Requirements

A staffing agency drug testing program has to move as fast as the placement pipeline, because a candidate who is not cleared by the...

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Poppy Seeds and Drug Tests: The Science Behind Opiate False Positives

Aug 18, 2026 ·8 min read

Poppy Seeds and Drug Tests: The Science Behind Opiate False Positives

Yes, eating poppy seeds can trigger a positive opiate result on a urine drug screen, because raw poppy seeds retain trace morphine and codeine...

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Why Is PCP Still on Drug Test Panels? Detection, Cutoffs, and the Federal Five

Aug 18, 2026 ·8 min read

Why Is PCP Still on Drug Test Panels? Detection, Cutoffs, and the Federal Five

PCP stays on federal and workplace drug test panels because it is one of the original five drug classes named in SAMHSA's Mandatory Guidelines...

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Does Oxycodone Show Up on a Drug Test? OXY Panels vs Standard Opiate Screens

Aug 18, 2026 ·6 min read

Does Oxycodone Show Up on a Drug Test? OXY Panels vs Standard Opiate Screens

Oxycodone does not reliably show up on a standard opiate (OPI) immunoassay screen, because that test is built to detect morphine and codeine, not...

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Drug Testing in Occupational Health Clinics: Building a Reliable Point of Care Program

Aug 18, 2026 ·8 min read

Drug Testing in Occupational Health Clinics: Building a Reliable Point of Care Program

An occupational health clinic builds a reliable drug testing program by splitting the book of business into two lanes: a non-DOT lane, where instant...

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