Abstract: HLA genotype of a test specimen is determined by hybridization of a nucleic acid sequence derived from the test specimen by using a substrate on which oligonucleotides of 10-24 nucleotide length derived from sequences of a group of genes belonging to HLA class I or class II antigen on a human genome and including polymorphism of gene as alloantigens in the sequences are immobilized through covalent bonds. There are provided a typing kit and typing method that are suitable for processing of a large number of specimens and enable high accuracy typing by one test.

Abstract: In a method of determining presence or absence of a component derived from an organism contained in a test material or a biospecies from which the component is derived, a nucleic acid specific to a biospecies of interest is detected by performing hybridization of an oligonucleotide synthesized based on a sequence specific to the biospecies in a DNA sequence corresponding to a ribosomal RNA gene or a cytochrome-related gene of the biospecies of interest and a nucleic acid derived from the test material.