Patent ID: 8822163

Claim:
A method for measuring β-glucan (hereinafter, abbreviated as “βG”), which comprises: (1) contacting a sample with protein 1 comprising an amino acid sequence shown in any one of SEQ ID NO: 4, SEQ ID NO: 6, SEQ ID NO: 8, and SEQ ID NO: 10, or an amino acid sequence having 95% or more of homology to the amino acid sequence shown in any one of SEQ ID NO: 4, SEQ ID NO: 6, SEQ ID NO: 8, and SEQ ID NO: 10, and having a β-glucan binding activity (hereinafter, abbreviated as “βG-binding protein 1”), and protein 2 comprising an amino acid sequence shown in any one of SEQ ID NO: 4, SEQ ID NO: 6, SEQ ID NO: 8, and SEQ ID NO: 10, or an amino acid sequence having 95% or more of homology to the amino acid sequence shown in any one of SEQ ID NO: 4, SEQ ID NO: 6, SEQ ID NO: 8, and SEQ ID NO: 10, having a β-glucan binding activity (hereinafter, abbreviated as “βG-binding protein 2”), to form a complex of the βG-binding protein 1, βG in the sample and the βG-binding protein 2, wherein the βG-binding protein 2 is labeled with a labeling substance; (2) measuring a quantity of the labeling substance in the complex; and (3) determining a βG concentration in the sample based on the quantity measured in (2).