A method for the rapid separation of proteinous fractions by high-performance gel chromatography was described. Homogenates from tumorous and healthy tissues and blood were eluted by saline on a column packed with rigid hydrophilic macroporous particles of O-glucosa—Spheron 300. Fractions were collected and subjected to further analyses. Their antigenic activity was determined by the leucocyte adherence inhibition test method. For the specific immunoactive fractions a dependence of leucocyte adherence inhibition test values on the clinical state of sample donators has been found.