Table 6 Test reproducibility.

	Determine Syphilis TP Abbott Labs	Syphilis Fast Diesse Diagnostica	Espline TP Fujirebio Inc	Syphicheck‐WB Qualpro Diagnostics	SD Bioline Syphilis 3.0 Standard Diagnostics	Visitect Syphilis Omega Diagnostics
Lot‐to‐lot variation*	1/50	4/50	3/50	0/50	3/50	1/50
Day‐to‐day variation†	0/45	3/45	1/45	1/45	0/45	3/45
Operator‐to‐operator at reference labs‡	1/40	0/40	0/40	3/40	1/40	4/40
Operator‐to‐operator at sites	4/789	20/789	0/789	6/789	0/789	5/789

Values given as number of discordant results/total number of tests performed.

*Two lots of rapid tests performed using the same 25 sera.

†Nine sera tested on 5 days.

‡Ten sera run by 2 operators at each of 2 reference laboratories.