Opiate drugs and medications — such as morphine, heroin, and codeine — can be detected in a urine test up to 3 days after use. The words “opiate” and “opioid” are used interchangeably, but they’re not ...

Nicotine and its byproducts may stay in your body for hours, days, or longer, depending on how often you've used nicotine and ...

Creatinine levels indicate a person's kidney health, and high levels mean your kidneys are not working as effectively as they should.