Comparison of RPR and ELISA with TPHA for the Diagnosis of Syphilis: Implication for Updating Syphilis Point-of-Care Tests in Ethiopia

Table 3

Serology results of the DIALAB-ELISA and Randox-TPHA tests at the University of Gondar Hospital, 2015–2016.

DIALAB-ELISA	Randox-TPHA
	Reactive	Nonreactive	Total
Reactive	60	5	65
Nonreactive	1	94	95
Total	61	99	160

Sensitivity of DIALAB-ELISA (60 of 61 samples), 98.4%; specificity of DIALAB-ELISA (94 of 99 samples), 94.9%; agreement (, of 160 samples), 96.25%; positive predictive value (60/65) 92.3%; and negative predictive value (94/95) 98.9%.