The technology of the disease diagnosis new methods (including oncologic ones) on a basis of the infrared spectroscopy are analyzed. Diagnosis of the IR spectra demonstrates the high accuracy of cancer pathology at any stage of the disease, including precancerous conditions 1 analysis (10ml venous blood) is determined by more than 10 diseases of various origins. Diagnostic accuracy of above 91% for any forms and stages of cancer, the sensitivity of 85-97%, specificity 91-97%.