The proposed deal would comprise a secondary sale by existing investors and a primary infusion of capital, totalling ₹700-750 crore, the people said. It is likely to value Kochi-headquartered Agappe, counted among India's top in-vitro diagnostics (IVD) firms, at ₹3,000-3,200 crore, they said. Alvarez & Marsal is advising the promoters on the stake sale.