If the bacterium that causes syphilis is present it will show up during observation . Blood tests are another way to determine whether someone have syphilis . Antibodies are produced by the body shortly after infection . These antibodies can be detected through safe , accurate , and an inexpensive blood test (Centers for Disease Control 2004 . Low levels of antibodies can remain present after the syphilis is treated . Pregnant women should have a blood test for syphilis , because untreated syphilis can infect or caused...











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