Life sciences firm HealthTell has raised $4m from private backers to bring to market a test kit for lung, breast, prostate, and colorectal cancer.

The US-based firm, founded in 2010, is commercialising diagnostics technology originally developed at Arizona State University’s (ASU) Biodesign Institute. It is currently housed at the Innovations Incubator at Chandler, Arizona, where it employs 20 staff.

 As opposed to scanning directly for a pathogen, the company’s diagnostics software scans for a unique ‘immunosignature’ given off by a…