Discipline C: Radiochemistry Track 1 – Food Defense The goal of the Indiana State Department of Health (ISDH) Radiochemistry Laboratory is to enhance the capacity and capabilities for food defense in support of an integrated food safety system. Any Radiochemistry food defense samples collected will be screened for the presence of radionuclides using the method for Gamma Screening with a High Purity Germanium Detector for gamma emitters such as Ba-140, Cs-134, Cs-137 and I-131 according to the ISDH’s triage procedures for radionuclides.