diagnostic agents for clinical or medical laboratory use [ ; diagnostic agent kits for clinical or medical laboratory use consisting of L-FABP antibody coated microplate, pretreatment solution, assay buffer, the 2nd Ab-POD conjugate, substrate, substrate diluent, wash agent, stop solution, standard diluent, L-FABP standard, pretreatment microplate and plate seal; and test agent kits for clinical or medical laboratory use consisting of L-FABP antibody coated microplate, pretreatment solution, ...