A urine drug test is used to detect the presence of illegal and prescription drugs in urine. It’s also known as a urine drug screen. In a urine drug test, a sample of urine is sent to a lab. A tester ...

Looking for an encyclopedia of pee? Scientists have laid out the entire chemical composition of human urine, revealing that more than 3,000 compounds are found in the fluid, and have published it all ...

Urine crystals form when there are too many minerals in a person’s urine. Crystals in urine may cause no symptoms or may include lower back pain and nausea. When there is an excessive buildup of one ...