Blood tests will be positive for syphilis in the latent stage.

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Multiple Choice

Blood tests will be positive for syphilis in the latent stage.

Serologic testing for Treponema pallidum remains positive during latent syphilis because the antibody response to the infection persists even when there are no clinical signs. Treponemal tests (which detect antibodies to T. pallidum) tend to stay positive for life after infection, across both early and late latent stages. Non-treponemal tests (like RPR or VDRL) can reflect disease activity and may become nonreactive in late latent or after treatment, but the treponemal tests generally remain positive, indicating prior or past/current infection. Biopsy isn’t required to diagnose latent syphilis; blood tests are the main diagnostic tool.

Serologic testing for Treponema pallidum remains positive during latent syphilis because the antibody response to the infection persists even when there are no clinical signs. Treponemal tests (which detect antibodies to T. pallidum) tend to stay positive for life after infection, across both early and late latent stages. Non-treponemal tests (like RPR or VDRL) can reflect disease activity and may become nonreactive in late latent or after treatment, but the treponemal tests generally remain positive, indicating prior or past/current infection. Biopsy isn’t required to diagnose latent syphilis; blood tests are the main diagnostic tool.

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