RoundTable Healthcare Partners has announced it has completed a majority investment into Polymedco.

Polymedco, based in Cortlandt Manor, N.Y., is a marketer and distributor of diagnostic tests primarily used for colorectal cancer screening and the diagnosis of cardiac conditions. Founded in 1980, the company’s products are sold to distributors, hospital systems, payors and laboratories across the U.S.

RoundTable, based in Lake Forest, Ill., is an operating-oriented private equity firm focused exclusively on the healthcare industry. Founded in 2001, the firm targets middle market investments in medical devices, medical products and disposables; specialty pharmaceuticals; medication delivery systems; specialty distribution; and complementary outsourced services.

Terms of the transaction were not disclosed.