TABLE II. Results of immunochromatography (IC) on serum vs conventional serology (CS).

		CS
		Positive	Negative	Total
IC on serum	Positive	67	0	67
	Negative	3	168	171
	Total	70	168	238

negative predictive value: 98.2%; positive predictive value: 100%; sensitivity: 95.7%; specificity: 100%.