The purpose of the work is to determine the sensitivity criteria of a new methodological approach to the quantitative content of glycogen concentration in Trichinella larvae. In the laboratory, the natural Trichinella isolate was persisted on white rats by infecting animals (n=3). After animal euthanasia, Trichinella larvae were isolated by artificial digestion. The calculation of trichinella in a drop of suspension was carried out in a Mogilev - Kotelnikov chamber or in a watch glass in three studied samples of each experiment. The number of counted Trichinella larvae per drop was 1-10,000 specimens. The optical density values on the MKMF-02 device were determined in a cuvette with an optical path length of 5 mm at a wavelength of 425 nm. As a result of the work carried out, in some drops of the investigated suspension, the readings of the meter were positive. The average optical density was 0.064 and 0.6 with a content of 1000 to 10000 instances of larvae. The glycogen content, calculated per Trichinella larva, was 0.046 mcg