Fentanyl test strips offer a low-cost way for individuals ... On average, it takes approximately five attempts to overcome an ...

Researchers find that xylazine test strips, while useful harm reduction tools, have some significant limitations to be aware ...

Sound warning and color distinction: After using the alcohol tester, when the test result is less than 0.08% BAC, the green LED light is on, and there are 3 short beeps; when the test result is ...