Private equity firm Everstone, through its healthcare platform Everlife, has acquired a stake in Chennai-based CPC Diagnostics. CPC Diagnostics is a medical devices manufacturer and distributor with presence across India, Sri Lanka and Bangladesh, and exports to countries in the Middle East and Europe. Everlife invests in manufacturers and distributors in segments such as in-vitro diagnostics. The deal will help Everlife include core in-vitro diagnostics segments in its portfolio of medical devices.