Table and Figure depict the antimicrobial susceptibility test for P. guajava extracts and P.g-CuNPs prepared disks. At concentrations of 10 µg/mL and 100 µg/mL, P. guajava extracts exhibited no inhibition against the four tested bacterial strains. This lack of inhibition can be attributed to the serial dilution, resulting in lower concentrations of the P. guajava extract.