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

Nursing Home Employee Drug Testing: A Guide for Long Term Care Facilities
Skilled nursing facilities, assisted living communities, and other long term care settings carry a combination of risk factors that few other workplaces share. Staff have routine, often unsupervised access to controlled substances....
Read articleMore from the lab notebook
Page 4 of 22
Benadryl and Drug Tests: Diphenhydramine False Positives Explained
Diphenhydramine is the active ingredient in Benadryl and dozens of other over the counter allergy pills and sleep aids. It is also one of...
Read article
Nursing Student Drug Testing: What Clinical Placements Require
Every nursing student eventually runs into the same wall before their first hospital rotation: a drug screen requirement that has nothing to do with...
Read article
Can Lidocaine or Novocaine Cause a Positive Cocaine Test?
A patient gets a filling at the dentist, a minor procedure with a local numbing shot, or a nasal scope at an ENT office,...
Read article
How Long Does Oxycodone Stay in Your System for a Drug Test?
Oxycodone is a semi-synthetic opioid sold under brand names like OxyContin, Roxicodone, and in combination products like Percocet. It is a Schedule II controlled...
Read article
How Long Does Fentanyl Stay in Urine? Detection Windows and Cutoffs
Fentanyl behaves differently in the body than the opiates a standard drug test was built to catch, and that gap causes real confusion for...
Read article
Prozac and Drug Tests: When Fluoxetine Triggers a False Positive
Fluoxetine, sold under the brand name Prozac, is a selective serotonin reuptake inhibitor prescribed for depression, obsessive compulsive disorder, panic disorder, and bulimia nervosa,...
Read article
Cough Medicine and Drug Tests: Why Dextromethorphan Can Read as PCP
A donor takes an over the counter cough suppressant, shows up for a routine urine screen, and gets flagged for phencyclidine. It sounds unlikely,...
Read article
Zoloft and Drug Tests: The Sertraline Benzodiazepine False Positive
A patient taking sertraline, sold under the brand name Zoloft, can screen positive for benzodiazepines on a standard urine immunoassay without ever having taken...
Read article
What to Expect at a Pre Employment Drug Test
A job offer that comes with a drug test condition follows a fairly predictable sequence almost everywhere in the country. The specifics change depending...
Read article
Wellbutrin and Drug Tests: Why Bupropion Triggers Amphetamine False Positives
Bupropion, sold under brand names including Wellbutrin and Zyban, is one of the most commonly prescribed antidepressants and smoking cessation aids in the United...
Read article
Pseudoephedrine and Meth False Positives: What Confirmation Testing Sorts Out
A urine cup flags amphetamines, and the first thought for a lot of donors is panic over a methamphetamine result they know is wrong....
Read article
Post Accident Drug Testing and the OSHA Rules Employers Get Wrong
Most employers believe one of two myths about post accident drug testing. Either OSHA banned it outright, or OSHA has no opinion on it...
Read article