08:59 AM EDT, 08/11/2026 (MT Newswires) -- Healthcare stocks were flat to higher premarket Tuesday, with the State Street Health Care Select Sector SPDR ETF (XLV) inactive and the iShares Biotechnology ETF (IBB) advancing by 0.3%.

IDEXX Laboratories ( IDXX ) shares were up more than 3% after the company launched the Catalyst proBNP Test, a dual-species in-clinic test for NT-proBNP designed to help veterinarians assess heart disease in cats and dogs.