# sfdk check > Performs quality checks. > More information: . - Display test suites: `sfdk check --list-suites` - Run all or essential test suites: `sfdk check` - Add testing level to the check: `sfdk check {{[-l|--levels]}} +{{level}}` - Remove testing level from the check: `sfdk check {{[-l|--levels]}} -{{level}}` - Add testing suite to the check: `sfdk check {{[-s|--suites]}} +{{suite}}` - Remove testing suite from the check: `sfdk check {{[-s|--suites]}} -{{suite}}`