Which serologic tests are specific for antibodies against T. pallidum and which are not? Which ones become negative with treatment?
Answer: Specific: FTA-ABS and MHA-TP test for antibodies against T. pallidum. These are the first serologic tests to become positive and remain positive after treatment.
Nonspecific: VDRL and RPR tests for antibodies are associated with the infection and become negative with treatment.
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