Quest Diagnostics’ diagnostic insights are derived from one of the world's largest databases of de-identifiable clinical lab ...

Laboratory operator Quest Diagnostics beat Wall Street estimates for fourth-quarter profit and revenue on Thursday, helped by a robust appetite for its diagnostic tests.

CLEVELAND, Ohio — University Hospitals has sold some of its outpatient laboratory locations to New Jersey-based Quest Diagnostics for an undisclosed amount, Quest announced. The sale, first announced ...