Background. Sarcopenia is an aging-associated loss of strength, mass, and skeletal muscle function. In the absence of prevention and treatment, the progression of sarcopenia leads to a decrease in physical and functional activity, the development of senile asthenia, disability and premature death. Aim: study of body composition parameters, functional, clinical, laboratory parameters of elderly and senile women, depending on the presence and severity of sarcopenia. Materials and methods: a cross-sectional examination of 269 women of elderly and senile age (from 65 to 84 years) was carried out, the average age was 74.8 ± 5.7 years. After the diagnosis of sarcopenia, according to the EWGSOP2 protocol, the patients were divided into three groups: the first group - patients without sarcopenia (n = 93); the second group - patients with probable and confirmed sarcopenia (n = 113); the third group - patients with severe sarcopenia (n = 63). After grouping, intergroup comparisons of body composition parameters were performed, including bioimpedance phase angle, as well as functional, clinical and laboratory parameters. Results. With an increase in the severity of sarcopenia, an increase in the average age of patients, an increase in body fat mass, and a decrease in lean and skeletal muscle mass were noted. The bioimpedance phase angle had the smallest value in the group of women with severe sarcopenia (4.77 ± 0.60 degrees in the group without sarcopenia, 4.42 ± 0.50 degrees in the group with probable and confirmed sarcopenia, 3.67 ± 0.51 degrees - in the group with severe sarcopenia; p1-2, p1-3, p2-3