The examination was conducted in 78 patients with congestive circulatory insufficiency. Albumin metabolism was studied in these patients with the aid of 1(131)--labelled albumin after Metthews. The half-life of albumin was studied, as well as the decay speed factor and the synthesis rate. The plasma albumin level was determined. Changes in the half-life duration were revealed. Patients with Stage III dystrophic circulatory insufficiency were shown to have a reduced plasma albumin level, a shortened albumin half-life, and increased synthesis rate and decay factors. Patients with Stage II-A and B circulatory insufficiency had varying changes of these parameters differing from the normal range.