minDNA™ technology facilitates the analysis of DNA, in one minute, by a handheld photometric reader. A mixture consisting of a patient’s whole blood specimen and a disposable reagent is exposed to the minDNAnalyzer, a digital handheld reflectance photometer. These assays can be utilized in point-of-care settings by nonclinical personnel using finger stick blood samples, or in the laboratory using EDTA whole blood specimens obtained through venous blood draws. This technology is currently being applied to the development of rapid white blood cell count and absolute neutrophil count assays that can monitor side effects of certain psychiatric and oncology drugs.