Table 1 Syphilis serological testing (in serum and cerebrospinal fluid ).

Material	TPPA	FTA‐ABS		Cardiolipin	IgM–blot
		IgG	IgM	KBR	Tpallidum	VDRL
Serum	1:40 000	1:20 000	1:320	100 IU/ml	positive	positive
CSF	1:512	1:256	Undetermined	4 IU/ml	negative	positive

CSF, cerbrospinal fluid; FTA‐ABS, fluorescent treponemal antibody absorption; KBR, potassium bromide; VDRL, Veneral Disease Research Laboratory; TPPA, Treponema pallidum particle agglutination.