The present invention relates to methods, reagents and kits for detecting of formyl peptide receptor like-2 (FPRL2) polypeptide activity in a sample and identifying agents which modulate polypeptide activity. It further relates to antibodies raised against FPRL2. It further relates to substances for preventing, treating and/or alleviating diseases or disorders characterized by dysregulation of FPRL2 polypeptide signalling.