<prompt> Longest acting erythro poietin analogue isEpoietin αEpoietin βDarbo poietinRomiplostim  <response>: Darbo poietin is the longest acting erythropoietin analogue.Epoietin α Epoietin β are other erythropoietin analogues.Romiplostim is a thromboplastin analogue. 