Fentanyl is a synthetic opioid that’s 50-100 times stronger than the pain reliever morphine. While some people use fentanyl on purpose, many others get it in their systems without their knowledge.

Consumers shouldn't use certain tests manufactured by Universal Meditech Inc., the US Food and Drug Administration warned Friday, including those that test for pregnancy, ovulation and urinary tract ...

In an effort to slow the proliferation of synthetic opioid-related deaths, California will begin offering free fentanyl-testing strips to eligible organizations across the state that ask for them, the ...