Table 2.

Interpretation of IgM Treponema‐Specific Bands

IgM bands	Result	Interpretation
No bands or one reactive band from p44.5 or one to four weak bands.	Negative	No specific antibodies against Treponema pallidum detectable.
One reactive band from p47, p17, or p15 or one reactive band p44.5 together with one to three weak bands.	Equivocal	T. pallidum infection is suspected. Check a second sample after 2–3 weeks.
At least one reactive band from p47, p17, p15 together with one to three weak bands.	Positive	IgM antibodies against T. pallidum are detectable. An infection with T. pallidum is very likely.