Absorption test of Treponema pallidum antibody by fluorescence method

The fluorescence Treponema pallidum antibody absorption test (FTA-ABS) is an indirect fluorescent antibody method. Before the test, the patient's serum was treated with Reiter's Treponema pallidum ultrasonic lysate to remove cross-reactive antibodies, and then treated with Treponema pallidum, and then added anti-human IgG labeled with fluorescein. This method has high sensitivity and specificity, and can detect the specific antibodies of Treponema pallidum. However, the operation is complicated, and the patient's response continues to be positive after drug treatment. Therefore, it is not suitable to judge the curative effect. If you need to determine the efficacy, you can refer to the serum reagin test results.