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Implant Y-3 places an internal filtration system in the digestive tract that strips any liquid consumed of all radioactive particles before being processed by the body.— In-game description

Implant Y-3 is a special perk in the Fallout: New Vegas add-on Old World Blues.


This perk is available to the player after finding the Auto-Doc Upgrade: Implant Y-3 in the Z-9 Crotalus DNA preservation lab. It can then be purchased from the Auto-Doc in The Sink for 12,000 caps.


  • Removes radiation taken when drinking dirty or irradiated water, soft drinks, and alcohol from the Pip-Boy inventory.
    • The message "Implant Y-3 removed ingested radiation" will appear on-screen.
    • The amount of radiation removed is dependent on the player's current radiation resistance level.
  • It has a lesser effect when drinking from irradiated faucets, toilets, urinals and water ponds. Radiation effects are lowered to +1 rad.
    • There is no on-screen message when drinking from these sources.


  • Due to the way the perk's effects are calculated (1 - (Player.GetActorValue RadResist / 100)), it is less effective at higher levels of radiation resistance. [verification needed] Using dirty water as an example:
    • RadResist 15%, drinking dirty water (Rad+5) → no radiation
    • RadResist 69%, drinking dirty water (Rad+1) → no radiation
    • RadResist 70%, drinking dirty water (Rad+1) → radiation +1
      • Note that high levels of radiation resistance may be temporary (boosted by Rad-X and clothing items), while the player may need to drink on a more regular basis, especially in hardcore mode.
  • This perk is an alternative to the Lead Belly perk, but does not affect irradiated food.

Behind the scenes

The image for this perk is the same as the icon for the RobCo processor widget, a quest item in Fallout 3.

  • All Old World Blues implant perks use this image, and they are the only characteristics in the SPECIAL that have no Vault Boy or Vault Girl included in the image.