The former Hewlett-Packard campus in Marlborough has been vacant for a few years.

MARLBOROUGH, MA-Quest Diagnostics said Wednesday it had finalized a 200,000-square-foot lease to build a clinical laboratory at the former Hewlett-Packard campus here. A Quest spokesman did not respond to’s requests for further information on the deal, which occurred in tandem with the diagnostic information provider’s acquisition of two business units of UMass Memorial Medical Center.

Both units—UMass Memorial’s clinical outreach laboratory business and its anatomic pathology outreach laboratory business, both based in Worcester, MA—will relocate to the new Marlborough facility upon its completion. Quest also plans to move its existing full-service clinical laboratory in Cambridge, MA and its Athena Diagnostics specialty neurology testing subsidiary in Worcester to the new facility, according to a release.

The Boston Globe reported this past October that Quest planned to spend $64 million to redevelop the former H-P space, part of a now-vacant 750,000-square-foot campus. The redevelopment will be done in accordance with best practices from Madison, NJ-based Quest’s network of laboratories across the US, and eventually will employ as many as 1,200 medical, administrative and logistics staff. It’s expected to be completed in 18 to 24 months; once it’s fully operational, UMass Memorial has the option to invest in a minority financial stake in Quest’s business in Massachusetts.

In a statement, Quest CEO Steve Rusckowski says the company is pleased to deepen its “longstanding commitment to Massachusetts and New England with our selection of Marlborough as the location for our future lab. Once operational, the facility will be a vital asset in our network of laboratories in the United States and a source of quality healthcare jobs in the state. It will also provide the basis for us to continue to grow in New England and build shareholder value.”

Built in the 1970s and originally owned by RCA, the two-building, 109-acre campus at 200 Forest St. and 2 Results Way in Marlborough had been vacant for a few years when its current owner, Framingham, MA-based Atlantic Management LLC, paid $8.7 million to acquire it in the fall of 2011. At the time, Atlantic president Joseph Zink told the Worcester Telegram & Gazette that the site could accommodate far more commercial development than it held at present.

“Our approach in developing this site is when we arrive at a plan and find a user that the site makes sense, we would meet with the city and the neighbors and discuss our development plans with them, and listen to their input and ideas,” Zink told the newspaper. “We have utilized this approach successfully in both Lexington and Burlington, resulting in projects that worked well for the community, tenant and ourselves.”

This past October, Atlantic presented a proposal to the Marlborough city council that would mix offices, shops, 350 apartment units and a hotel, according to published reports. The plan, which entailed rezoning the campus, received final approval from the council last month.