Labcorp – a global life sciences and healthcare company – is set to close a Massachusetts lab and lay off dozens of workers.

The company said that the sale of its medical device testing business would allow it to focus on core areas of preclinical drug development and chemical testing.

FAIRMONT — After 50 years on Locust Street, Labcorp has moved to a new location at the Tech Center near White Hall. “We’ve been here for a long time and plan to stay here,” Todd Homan, vice president ...