Romiplostim fremstilles ved en metode kaldet "rekombinant DNA- teknologi", hvorved en bakterie får indsat et gen (DNA), som gør den i stand til at producere romiplostim.
Romiplostim is produced by a method known as ‘ recombinant DNA technology’: it is made by a bacterium that has received a gene (DNA), which makes it able to produce romiplostim.