Group K Diagnostics, a Philadelphia-based startup working in the health care field, has raised $959,200 of venture funding in the form of convertible debt from undisclosed investors, according to an SEC filing.

The company is developing a point-of-care diagnostic device that leverages paper-based microfluidics technology to reduce cost and time of testing for over 40 diseases.

Group K is offering $1 million in securities, of which only $40,800 remain as of its filing.