Abstract: A method of detecting anti-neoplastics particularly adriamycin by shining visible light through a filter at the anti-neoplastic. The filter effectively removes light which is not in the absorption spectrum of the anti-neoplastic. Light which is reflected off of the anti-neoplastic as well as fluorescing light is then permitted to pass through a second filter and into a detector. The second filter is designed to filter out any light emitted by the light source and permit basically only light that is fluorescing from the anti-neoplastic. The light passing through the filter is then detected by a detector. In one embodiment, the second filter is a pair of glasses and the detector is the eye of an individual. The light source can be portable providing a hand held light source to quickly scan the environment. This is effective in detecting extremely dilute concentrations of adrimycin.