Corpse Blood

Corpse Blood is a quest item found in Pathologic that can be obtained on Day 3 by both the Bachelor and the Haruspex in their respective routes.

The Bachelor must obtain the Corpse Blood to complete the main quest "Enemy Unseen". Corpse Blood is retrieved from the corpse in the Cemetery guarded by three Patrolmen. It can be examined under the microscope in Rubin's Prosectorium to progress the quest. This removes it from the Bachelor's inventory.

The Haruspex can choose between obtaining Corpse Blood or obtaining another infected organ or infected blood for the Bachelor for the side quest "Dead Tissue". Corpse Blood can be retrieved from the corpse in the Cemetery that is guarded by one patrolman, after which it can be brought to the Bachelor.

Quote
"This blood must be analyzed, although the current conditions make any thorough analysis impossible. There's a high chance it contains a sample of the harmful microorganism."

- Hover text