The "Friends and Family" test is not designed to point the finger at failing NHS hospitals, a health minister claimed.
Anna Soubry told ITV's Daybreak: "It's about finding out where there are failings within otherwise great performing hospitals.
"One of the things we do know is that some people can have an amazingly, brilliant experience when they use our NHS. Unfortunately not everyone has that same experience.
"So this test identifies where there are faults, where there are failings, as well as where things are working well so that hospitals know what they need to do to make sure everybody gets the same great service."