Implant Y-3

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

Location
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.

Effects

 * 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 dependant 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.

Note

 * 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. 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), whilst the player may need to drink on a more regular basis, especially in hardcore mode.

Behind the scenes

 * All implant perks of Old World Blues use this image and they are the only characteristics in the SPECIAL that have no Vault Boy or Vault Girl included in the image.
 * The image for this perk is the same image of the icon for the RobCo processor widget, a quest item in Fallout 3.