Table 1.

NBC System Evaluation Using ZIKV-Infected Patient Serum Samples (n = 10)^a

	CDC Zika MAC-ELISAb		Aptima Zika virus assayc		NBC systemd
Patient no.	sample	ISR value	sample	S/Co value	sample	V (μm/s)
1	positive	13.86	positive	18.51	positive	0.272
2	positive	14.96	negative	0.00	positive	0.253
3	positive	21.32	positive	31.91	positive	0.432
4	positive	3.78	positive	20.59	positive	0.208
5	positive	18.98	positive	32.91	positive	0.439
6	positive	17.25	negative	0.00	positive	0.372
7	positive	18.07	positive	33.09	positive	0.475
8	positive	14.14	positive	19.39	positive	0.246
9	positive	2.55	positive	17.18	positive	0.140
10	negative	0.60	negative	0.00	negative	0.065

^aThe cellphone results were compared with the results obtained by the standard lab-based tests recommended for ZIKV detection.

^bZika immune status ratio values (Zika ISR). Reading of ≥1.80 is positive and ≤1.60 is negative as defined by the manufacturer.

^cSignal-to-cutoff value (S/Co). Reading of >1.0 is positive and <1.0 is negative as defined by the manufacturer.

^dV is the velocity magnitude. Reading of ≥0.086 is positive and <0.086 is negative, considering S/N = 2 and the average velocity of control samples (no ZIKV) is 0.07 ± 0.008 μm/s.