The LabSOCS (Laboratory Sourceless Calibration Software) mathematical efficiency calibration software brings a new level of capabilities to gamma sample assay in the laboratory by eliminating the need for radioactive sources for efficiency calibration. By combining the detector characterization produced with the MCNP modeling code, mathematical geometry templates, and a few physical sample parameters, the LabSOCS Calibration Software gives you the ability to produce accurate quantitative gamma assays of most any sample type and size.