The upper limits implied by the LAT non-detections on the ratio R of the 100 MeV to 1 MeV fluences, νF_ν = ν^∫dtf_ν(t) for hν = 1100 MeV, during the prompt emission, assuming a differential photon spectrum dN_γ/dE ∝ E^-2 above 100 MeV. Also shown (red diamonds) are the measured ratios for GRBs detected by the LAT (GRB 080825C, GRB 080916C, GRB 090217, GRB 090323, GRB 090328, GRB 090626, GRB 090902B, GRB 090926A, GRB 091003, reported in Ghisellini et al. 2010; Abdo et al. 2010). The 100 MeV specific fluence was derived for these bursts from the reported  >100 MeV fluence assuming dN_γ/dE ∝ E^-2 above 100 MeV.