Comparison of the results obtained from the immunosensor with the actual additions.

Samples	The concentration of S. aureus (CFU per mL)				SD	RSD (%)
	Containing	Added	Immunosensor	Plate count
1	ND	2.20 × 105	1.99 × 105	2.14 × 105	1.30 × 104	6.54
2	ND	2.20 × 106	2.04 × 106	2.07 × 106	1.09 × 105	5.32
3	ND	2.20 × 107	2.27 × 107	2.13 × 107	7.17 × 105	3.16
4	ND	2.20 × 108	2.11 × 108	2.10 × 108	8.60 × 106	3.91
5	ND	2.20 × 109	2.24 × 109	2.09 × 109	1.08 × 105	4.83