A classification of monocyte subpopulations developed in 2010 with coverage of the immunobiological properties of cells, their functional activity and participation in various pathological processes (inflammatory, cardiovascular diseases, strokes, myocardial infarctions, aortic aneurysms, surgical modification of heart valves, diabetes, burns, etc.). The diagnostic and prognostic aspects of the analysis of monocytic subpopulations are considered. The unique data obtained by the staff of the Gamaleya Institute of epidemiology and microbiology. They consist in the fact that various physical forms of unmodified native type 1 collagen are powder, i.e. crushed bundles of collagen fibers, a hydrogel or a solution of extracellular matrix peptides, as well as a suspension of collagen fibers obtained from a powder, when applied to the surface of acute and chronic and diabetic wounds, bedsores, trophic ulcers, etc., can provide a pronounced anti-inflammatory, reparative, remodulating and regenerative effect on condition of wounds, providing their accelerated healing due to the local accumulation of “regenerative” subpopulations of Mon3 monocytes, which can be most directly used in burn tissue lesions. In this case, the analysis of monocytic subpopulations is of paramount importance. Moreover, possible potentiating effects of additional use in burns under the control of the analysis of monocyte subpopulations of powerful modern pluripotent immunomodulators – polyoxidonium, galavit and their possible combination with local use of collagen preparations are discussed. Finally, we obtained preliminary data indicating the development in burned patients of a deficiency in the absolute and relative content of the most important “patrolling” non-classical subpopulation of CD14+CD16++ monocytes compared with healthy primary (non-professional) donors, which can be a very important finding in the diagnosis and prognosis and substantiation of new methods of treatment of burns.