Abstract: Provided are a reagent, kit, and method for preserving a urine specimen used for analysis of urine components, enabling easy transportation of specimens and acquisition of analysis results equivalent to those of fresh urine even after transportation. A reagent for preserving a urine specimen, comprising a filter paper, wherein the filter paper comprises an aromatic alcohol, a phenol derivative, or a polyhydric fatty alcohol.

Abstract: An anti-equol antibody composition, containing an anti-equol antibody or antibody fragment thereof containing, as an immunoglobulin heavy chain variable region, hypervariable regions CDR1, CDR2, and CDR3 respectively including amino acid sequences represented by SEQ ID NO: 1-3, and as an immunoglobulin light chain variable region, hypervariable regions CDR1?, CDR2?, and CDR3? respectively including amino acid sequences represented by SEQ ID NO: 4-6; and an anti-equol antibody or antibody fragment thereof containing, as an immunoglobulin heavy chain variable region, hypervariable regions CDR1, CDR2, and CDR3 respectively including amino acid sequences represented by SEQ ID NO: 1-3, and as an immunoglobulin light chain variable region, hypervariable regions CDR1?, CDR2?, and CDR3? respectively including amino acid sequences represented by SEQ ID NO: 7-9.

Abstract: An anti-equol antibody composition, containing an anti-equol antibody or antibody fragment thereof containing, as an immunoglobulin heavy chain variable region, hypervariable regions CDR1, CDR2, and CDR3 respectively including amino acid sequences represented by SEQ ID NO: 1-3, and as an immunoglobulin light chain variable region, hypervariable regions CDR1?, CDR2?, and CDR3? respectively including amino acid sequences represented by SEQ ID NO: 4-6; and an anti-equol antibody or antibody fragment thereof containing, as an immunoglobulin heavy chain variable region, hypervariable regions CDR1, CDR2, and CDR3 respectively including amino acid sequences represented by SEQ ID NO: 1-3, and as an immunoglobulin light chain variable region, hypervariable regions CDR1?, CDR2?, and CDR3? respectively including amino acid sequences represented by SEQ ID NO: 7-9.