Quanterix, a diagnostic testing company, has leased 19,802 square feet in a recently renovated life science lab building at 113 Hartwell Ave. in Lexington.

The lease represents an expansion of 10,000 square feet from the company’s current location at One Kendall Square in Cambridge.  Occupancy is scheduled for April.

Tucker Hansen, Joe Flaherty and Ben Coffin of Colliers International represented Quanterix in negotiations with Tom Rango, Stephen Lynch and Leah Harsfield of King Street Properties, the landlord.

"Quanterix is exactly the kind of cutting edge life science company we were hoping to attract at 113 Hartwell Ave.," Lynch said. Quanterix will be the first tenant in the building.   

"By relocating from One Kendall Square to 113 Hartwell Ave., Quanterix will move into a brand new facility designed to fit its specific needs," Hansen said.