[Method of recording isotonic blood clot retraction]

The method and the device for photometric registration of blood clot isotonic retraction when the preset constant force is applied to the blood clot are described. The mathematic model enabling one to derive kinetic and energy parameters of the considered process is built. These parameters include: a velocity constant, a half-period of fibrinosis, a latent period, phase durations of contraction and tension, a specific working capacity, velocity constants of clot retraction and relaxation. The method may be useful in clinical diagnostic practice and in research work to evaluate hemocoagulation process and functional properties of blood cells.