Blood tests for Lyme?

Several tests can detect the Lyme bacteria. Find out which one you should take if you are bitten.
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Though it's tough to diagnose the disease without an evident bull's-eye rash, several tests can detect antibodies to the Lyme bacteria. The CDC recommends several tests-including ELISA, IFA, and the Western blot-that can help support a diagnosis. The agency recently warned patients to stay away from other tests, which have not been clinically validated.