ABSTRACT This work presents spectroscopic characterization results for biological simulant materials measured in the terahertz gap. Signature data have been collected between 3 cm -1 and 10 cm -1 for toxin Ovalbumin, bacteria Erwinia herbicola, Bacillus Subtilis lyophilized cells and RNA MS2 phage, BioGene. Measurements were conducted on a modified Bruker FTIR spectrometer equipped with the noise source developed in the NRAL. Th e noise source provides tw o orders of magnitude higher power in comparison with a conventional mercury lamp. Photometric characterization of the instrument performance demonstrates that the exp ected error for sample characterization inside the interval from 3 to 9.5 cm -1 is less then 1%. Key words: terahertz spectroscopy, bi ological molecules, noise source. I. INTRODUCTION Terahertz (THz) Spectroscopy has recently emer ged as a promising technique for detection and identification of biological materials including warfare agent simulants. In comparison with the current optical scattering techniques THz spectroscopic technology promises significant optimization due to higher selectivity thus minimizing the number of false alarms. Substituting current PCR technologies will eliminate spore cu lturing, minimizing collection and processing of