Following deposition, fNAP microarrays were exposed to a vigorous wash cycle to evaluate the stability of fNAP attachment (Figure ). Quantitative measurements demonstrated an insignificant degree of detachment, with the SNR remaining at 1.8. With microarray stability established, functionality tests using NaOH were conducted, where a magnesium chloride-rich buffer solution acted as the negative control. Resultant images are provided in Figure . While the baseline fNAP microarray exhibited a SNR of 1.9, NaOH exposure yielded a significant increase as depicted by a SNR of 3.7 (Figure .i). This corresponded with a fold change of 2 respective to the baseline fNAP array. Importantly, the buffer control exhibited no evident change, retaining a SNR of 1.9. The three conditions offered CV values of 2.6%, 4.8%, and 4.6%, respectively, confirming high array consistency (Figure .ii). Next, the visibility of buffer and NaOH-exposed fNAP microarrays was evaluated against target food backgrounds. The resultant fluorescence images are presented in Figure . While the presence of overlaid food products expectedly interfered with the visibility of fNAP microarrays, both pre and post-cleavage states remained distinguishable. Of course, pre-cleavage microarrays offered minimal visibility, with SNRs of 1.3, 1.3, and 1.4 for lettuce, beef, and chicken, respectively (Figure .i). Comparatively, post-cleavage microarrays exhibited SNRs of 2.8, 3.0, and 2.9 with the three respective food products. With optimization of fNAP concentration and incubation conditions, the SNR of such systems can be expected to improve. More definitively, image processing would significantly increase the SNR of the presented platform, as the reported values were all derived from unprocessed images to provide a baseline evaluation of sensor signal intensity. All conditions offered CV values below 10%, confirming minimal food-mediated disruption of the arrays (Figure .ii).