A portable diagnostic device for medical purposes, namely, a real-time disease diagnostic device which measures bio-electric potential or biological signals with nanobiosensor for diagnosis of inflammation of tissues and organs in the organism, rhinitis, empyema, periodontitis, esophagitis, thyroid disease, bronchitis, lung disease, hepatitis, fatty liver, gastritis, gastric ulcer, nephritis, pancreas disease including diabetes, enteritis, endometritis, cystitis, prostate disease, inflammatio...