The image researched biological liquid object (blood, saliva, physiological saline) obtained by gas discharge visualization. Each image contains an average of 5 to 15 well defined streamers are placed in a circle around drops of liquid. Research can quickly (1-5 min.) detect concentrations of certain substances deviation from the norm, that can help in rapid diagnosis of certain diseases. Also, this method can efficiently provide preliminary information on the quality and composition of water.