MacKay Life Sciences Inc, formerly Biofield Corp, is a medical technology company that has developed an innovative system for detecting breast cancer. The company is also developing a breast cancer screening system.The principal activities of the company include product development, conducting clinical trials, recruitment of scientific, regulatory, manufacturing, marketing and administrative personnel and raising capital. The company's breast cancer diagnostic device, the Biofielf Diagnostic System, employs unique, single use sensors and a measurement device to detect and analyze changes in cellular electrical charge distributions.