The toluidine red non-heating serologic test for syphilis is a non-specific test for syphilis. A positive result of this test indicates that the person is likely to have syphilis. However, because it is a non-specific test, a positive result alone does not confirm the diagnosis of syphilis. If the result is positive, syphilis can be diagnosed. If the corresponding result is negative, syphilis can be ruled out. In the case of ruling out syphilis, the toluidine red non-heating serological test is not of much concern. If a patient with syphilis has a positive toluidine red without heating serological test, it means that the corresponding treatment is needed. Generally speaking, it is the application of penicillin and other anti-syphilis drugs, and after a period of treatment, the toluidine red no heat serological test should be reviewed. The corresponding titer will change, and many people can become negative after treatment.