Resident Evil Requiem: Infected Blood Locations & Interactive Tracking Guide

Infected Blood is Grace Ashcroft's crafting currency in Resident Evil Requiem — the biological resource behind every item she manufactures, from stealth-kill Hemolytic Injectors to Molotov Cocktails, Med Injectors, Steroids, and Acid Bottles.

MapMaster's team has documented over 50 confirmed Infected Blood and Transfusion Bag sources across the Care Center, Water Treatment Plant, and ARK — the most comprehensive blood source location maps available.

Find everything through the maps added to our Resident Evil Requiem 100% completion hub.

What is Infected Blood Used For?

Infected Blood is stored in Grace's Blood Collector — it doesn't occupy standard inventory slots.

The collector starts with a 100-unit capacity. Spend Infected Blood by crafting recipes unlocked through Blood Specimen analysis:

• Hemolytic Injectors (Denatured Specimen)
• Med Injectors (Converged Specimen)
• Steroids and Stabilizers (Reversible Specimen)
• Molotov Cocktails
• Acid Bottles (physical document recipes).

Each recipe draws from the collector's stored units — when it empties, collect more. Crafted items occupy inventory slots; raw Infected Blood does not.

See the Crafting Recipe guide for all recipes and blood costs.

Two Sources: Static Pools and Transfusion Bags

The checklist below tracks two distinct Infected Blood source types.

Static pools are fixed pickups — blood in buckets, bathtubs, on the floor next to corpses, and in puddles throughout the Care Center. These are collected by approaching with the Blood Collector equipped.

Transfusion Bags are a separate item that instantly fills the collector to capacity when used — they appear both as static world pickups and as enemy drops.

• The blind zombie in the Waiting Room drops a Transfusion Bag x50 on defeat.
• The blind zombie in the Records Room drops Transfusion Bag x50.

Both enemy-drop entries are tagged in the checklist. All Transfusion Bags are Grace-exclusive and cannot be transferred to Leon.

The Collection Pool: Your Biggest Single Cache

Six Infected Blood locations in the checklist are locked behind a single action: pull the Lever in the Collection Pool area.

Once the lever drains the pool, six separate blood pools become accessible on the lower level, totalling over 280 units in one room. This is the largest concentration of Infected Blood in the entire game.

Do not leave the Care Center Basement without pulling this lever first. The six Collection Pool entries are all tagged in the checklist with their access condition.

The Girl Creates Blood — Use Her

One checklist entry in the Workshop area "spawns only after the Girl kills a zombie when you go through the vent north of the Inspection area."

The Girl, the roaming pursuer enemy in the Care Center, leaves blood behind when she kills — this specific pool only exists because of her actions in that corridor.

It's a passive bonus from an enemy most players are trying to avoid.

How to Farm 5,000 Microsamples for the Bloodlust Trophy

The Bloodlust trophy requires collecting 5,000 microsamples of infected blood with the blood collector.

Progress is cumulative and tracked even if you die or reload a save. This means you can farm it without losing progress.

The most efficient method: find a reliable Transfusion Bag source — the blind zombie in the Waiting Room is the earliest example — kill the zombie, grab the bag, make a manual save at a nearby Typewriter, craft with the bag to empty your collector, then reload.

The bag reappears, and your total collection still counts. Completing the Bloodlust challenge rewards 10,000 CP, perfect for unlocking extras like infinite ammo on replay.

The checklist's Transfusion Bag entries — particularly the Water Treatment Plant Transfusion Bag x100 in the Storage Bay and the ARK Transfusion Bag x80 in Cold Storage — are the highest single-source values for this method.

All sources are marked on the Care Center interactive map, Water Treatment Plant map, and ARK map guide, with amounts, access conditions, and enemy-drop tags in the checklist below.