FIELD : medicine.SUBSTANCE : proposed group of inventions relates to medicine. Disclosed are a method and a kit for detecting Q61R mutation in a NRAS protein in a human tumor tissue sample. Method involves obtaining a sample of biological material taken from a patient, recovering DNA from said sample and carrying out PCR using a kit for detecting Q61R mutation in a NRAS protein.EFFECT : presented group of inventions enables higher specificity and sensitivity of determining the presence of a mutant allele at the Q61R point of the NRAS gene, as well as reducing the probability of process errors during laboratory manipulations.3 cl, 1 dwg, 1 tbl, 1 ex