The infobox template in this article is missing some required data. You can help Nukapedia by filling it in.
Tick blood, as the name implies, is a sample of blood taken from the remains of a mutated tick, the blood has been sealed into a glass mason jar, and can be drank as is. Alternatively, it can be more usefully used as a key component in crafting blood packs, which can in turn be used to craft stimpaks.
Can be found on the remains of ticks.
This article is too short to provide more than rudimentary information about the subject. You can help Nukapedia by expanding it.