Table 3.

Comparative analysis in terms of limit of detection and BSA detection range for several plasmonic configurations combined with the same MIP receptor.

Configuration	LOD	BSA Detection Range	Reference
Gold nanograting on a PMMA substrate (same chip of this work in a different setup)	37 pM	37 pM–100 nM	[39]
SPR D-shaped POFs	0.37 µM	0.37 µM–6.5 µM	[44]
GNG-based longitudinal (blue-shift resonance)	23 pM	23 pM – 10 nM	This work
GNG-based longitudinal (red-shift resonance)	0.54 µM	0.54 µM–10 µM	This work
GNG-based orthogonal (blue-shift resonance)	42 pM	42 pM–10 nM	This work