Board Thread:Questions and Answers/@comment-25322628-20160519191537

I don't know if this question's been asked or answered, but it came to mind today. Is the Titan Serum universal? I mean, can it be used on anyone or must it be limited to a specific type of people? Could it even affect anyone of Asian or Ackerman lineage? I envision someone like Mikasa deciding to use it to save Eren, only to find it doesn't work on her at all.

Again, the question is whether or not the Titan Serum is universal. 