Despite the boom in genetic tests available in US laboratories, oversight remains patchy. A survey of laboratory directors suggests that mandatory proficiency testing would result in fewer errors.

Certain health conditions, including liver disease and hepatitis, cause the immune system to produce anti-smooth muscle antibodies. Doctors use a blood test to check for these antibodies. Anti-smooth ...

The U.S. trade group representing laboratory companies and test manufacturers is suing to block the FDA from increasing its oversight of lab-developed tests, saying the agency overstepped its ...