Antiserum Injector Fragment in Warframe

How to get Antiserum Injector Fragment

Antiserum Injector Fragments are dropped by enemies in Infested Salvage missions. The only one is Oestrus on Eris.

Drops

• Oestrus, Eris (Infested Salvage): Enemies drop the fragments, usually about 7 per pickup, during Infested Salvage. ^[1][2]

Tips

• The injector needs 500 fragments to build and 600 for clan research, so plan on several long Oestrus runs. ^[1]
• The fragments are no longer needed for the retired Jordas Verdict trial. The injector now only restores armor in Infested Salvage. ^[3]

Sources

• [1] Antiserum Injector Fragment (Warframe Wiki, license: CC BY-SA), accessed 2026-10-30
• [2] Warframe: Infested Salvage (How to Do, Mission, Rotation Rewards & Location) (ProGameTalk, license: unknown), accessed 2026-10-30
• [3] Antiserum Injector (Warframe Wiki, license: CC BY-SA), accessed 2026-10-30

Used in (1)

• Antiserum Injector