DGX ▲ +0.5% - Quest Diagnostics Incorporated $DGX - Apple Health app Users to be Able to Order Labs from Quest Diagnostics Quest Diagnostics shares rose 0.5% following the announcement that Apple Health app users will now be able to order lab tests directly from Quest Diagnostics. The integration expands Quest's reach by tapping into Apple's large installed user base and makes ordering lab services more convenient for consumers. 09-SEP-2026 04:01 PM ET