In this proposal we suggest to study the field dependence of two inelastic signals observed in the pure URu2Si2 at the antiferromagnetic zone center Q0 = (1 0 0) and at incommensurate position Q1 = (0.6 0 0), respectively. While the former signal that is commonly associated with the hidden order (HO) in this system below THO = 17.5 K increases in energy from original ~1.7 meV to extrapolated ~3.2 meV, the latter signal at (~4.5 meV) decreases with field in energy very marginally. We also suggest to examine 8% Rh-doped system that does not show signatures of HO and for which also both Q0 and Q0 are missing. However, we expect a well-defined signal associated with Q2 = (2/3 0 0) to appear at higher fields, close to the metamagnetic transition. In general, we seek a possibility to disclose the relation between the INS signals and the appearance of field induced long-range orders appearing in pure and Rh-doped systems above ~34 T and ~22 T, respectively.