The state has made a second investment in a local chemical testing company developing a credit card-sized device that measures the biomarkers that indicate disease or some other biological state of an organism.

CyVek Inc., located on Barnes Industrial Road South, received $445,683 from Connecticut Innovations, the state’s quasi-public authority responsible for technology-based innovation and economic development. CyVek previously received $802,500 in 2010 from CI.

The state’s investment is part of $3 million in recent funding made primarily by individual investors the company already had.

CyVek is completing development on technology to measure markers in patient blood samples. Doreen DeSarro, Wallingford’s business recruiter, said she was pleased to see the state make another investment in a local firm.