A 24-hour urine collection test is a laboratory test to measure the content of certain substances in the urine, which can be used as a diagnostic indicator of the function of the kidneys. The test ...

After Elizabeth Moreno had back surgery in late 2015, her surgeon prescribed an opioid painkiller and a follow-up drug test that seemed routine — until the lab slapped her with a bill for $17,850. A ...

The cups of urine travel by express mail to the Comprehensive Pain Specialists lab in an industrial park in Brentwood, Tenn., not far from Nashville. Most days bring more than 700 of the little sealed ...

Devices used to measure biological readouts, known as biosensors, determine the concentration of a particular substance in a biological sample. While you may not recognize the name, you are probably ...

A new low-cost, portable device that uses a black box and smartphone camera to help patients get accurate urine test results at home is on the horizon, thanks to engineers from the Electrical ...

Blood pregnancy tests can tell you if you're pregnant 6 to 14 days after conception. You'll need to wait longer before taking ...

In her late 20s and attending college in Texas, Elizabeth Moreno suffered from debilitating back pain caused by a spinal abnormality. "I just could not live with the pain," she says. "I couldn't get ...