Blood pack

A blood pack is simply a pack of blood and, initially, is next to useless as a healing item as it only restores 1HP per pack.

After the player acquires the Hematophage perk, it becomes much more useful. One pack will now restore 20HP with no radiation damage making it just as useful as purified water (which is harder to find).

They can also be traded to Vance and the Family in exchange for Caps.