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The venereal disease research laboratory (VDRL) test is designed to assess whether or not you have syphilis, a sexually transmitted infection (STI).
A rapid plasma reagin test is used to screen you for syphilis. It detects the antibodies that your body produces to fight the infection.
An FTA-ABS test checks for the presence of antibodies to the bacteria that cause syphilis. Learn what to expect during the test and what the results mean.