Abstract:
Provided is a technique for achieving a higher measurement accuracy in the detection of an organism-originated physiologically active substance or the measurement of the concentration of the organism-originated physiologically active substance in a hyaluronic acid preparation. The present invention relates to a measurement method for detecting an organism-originated physiologically active substance or measuring the concentration of the organism-originated physiologically active substance in a hyaluronic acid preparation by mixing the hyaluronic acid preparation with an AL reagent to allow the organism-originated physiologically active substance in the hyaluronic acid preparation and an AL to react with each other. A mixed solution of the hyaluronic acid preparation with the AL reagent is diluted with an aqueous electrolyte solution, and a specific protein having a higher affinity for the organism-originated physiologically active substance than that of hyaluronic acid is added to the mixed solution.
Abstract:
With regard to the detection of a physiological active substance of biological origin and the measurement of its concentration in a sample, the invention provides a technique for moving gel particles that are produced in the sample without using a mechanical stirring member, and allows a highly accurate detection of the physiological active substance of biological origin and measurement of its concentration with a simple arrangement. By partial heating/cooling of a sample cell, thermal convection is generated within a mixture liquid in the sample cell, and as a result the gel particles that are produced in the mixture liquid are moved. In addition, based on the intensity of forward scattered light, the rate of change in the number of gel particles is measured.