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39 KD (IgM) Band details

What 39 KD (IgM) Band shows

The 39 kD IgM band is one of several Borrelia burgdorferi proteins on a Lyme disease immunoblot, which checks which of the bacterium's proteins your antibodies react to. This band corresponds to a protein called BmpA, which is considered fairly specific to Borrelia. It is one of the bands counted under the CDC criteria for an IgM blot. A reactive band means your IgM antibodies bound this protein. IgM antibodies are the first type made after an infection, so this can fit recent exposure, but one band does not show Lyme disease. Blots are read by the band pattern under CDC criteria, never one band alone, and IgM results are mainly useful in the first weeks of infection.

Tests that include 39 KD (IgM) Band

Quest Not offered
Labcorp Not offered
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