[en] The detection of uranium related to health physics applications requires low detection limits. This work compares the Minimum Detectable Activity (MDA) and the measuring range of several detection methods for Natural Uranium. The examined systems were:ROTEM-portable proportional alpha monitor , ROTEM-portable Geiger pancake beta monitor , Packard Liquid Scintillation System, NaI(Tl) and Ge γ spectrometry systems, and LiF-Laser Induced Fluorescence system. For all the portable and the y spectrometry systems the counting of the uranium samples is performed directly (non-destructive evaluation). For the LSC and LiF, the samples were first dissolved in HNO₃ , and then a small volume of the solution was counted