COMPOUND FOR FLUORESCENCE POLARIZATION IMMUNOASSAY

摘要

PROBLEM TO BE SOLVED: To provide a compound for fluorescence polarization immunoassay improved to become favorable for fluorescence polarization immunoassay and an immunoassay method using the compound. SOLUTION: This compound for fluorescence polarization immunoassay [F is a fluorescence compound residue; Y is an -NH- or a single covalent bond; Z is a strait chain or a branch chain alkylene chain containing two through ten carbon atoms to be replaced by at least one polarity hydrophilic group; Q is oxygen or sulfur; X is a ligand analog which is distinguishable to the corresponding ligand by a specific antibody] has an improved characteristic by being provided with an extremely favorable intensity and/or an extremely large span. A ligand within a body fluid sample is detected by using the compound.