If you are playing Resident Evil Requiem, you already know that survival depends on more than just bullets and herbs. Some key story moments and crafting paths require rare quest items, and one of the most talked about materials is Infected Blood. Many players struggle to find it because the game does not hand it to you in a simple or obvious way. You need to explore carefully, trigger the right encounters, and survive dangerous enemies to secure it.
What Is Infected Blood In Resident Evil Requiem?
Infected Blood is a special key item tied to the biohazard storyline in Resident Evil Requiem. It is not a regular crafting material like gunpowder or herbs. Instead, it is usually required for:
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Advancing a late mid-game laboratory quest
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Unlocking a sealed research wing
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Crafting a powerful antiviral serum
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Triggering a hidden side objective
Because it is tied to infected enemies, the item can only be obtained after progressing past the early survival phase of the game. If you are still exploring safe house areas or the opening town sections, you are not far enough yet.
Progress The Main Story First
Before you can get Infected Blood, you must reach the Containment Sector. This area unlocks after completing the Hospital Ruins chapter and defeating the mutated Warden boss. Once the power grid is restored and the underground tram becomes operational, you will gain access to restricted bio-labs.
Do not rush into this section unprepared. Enemies become stronger and more aggressive here.
Make sure you have:
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A fully upgraded handgun or shotgun
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At least two healing items
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Spare ammunition
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Inventory space for quest items
Once inside the Containment Sector, the search for Infected Blood begins.
Locate The Quarantine Lab
The Infected Blood sample is found inside the Quarantine Lab, which is on Sublevel B2 of the research complex. To enter this area, you must first collect the Biohazard Clearance Card from the security office.
Here is how to do it step by step:
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Enter the Security Monitoring Room.
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Restore partial power using the fuse from Storage Wing A.
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Unlock the electronic locker containing the Clearance Card.
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Use the card on the sealed lab door.
When you enter the Quarantine Lab, you will trigger a scripted encounter. Be ready.
Defeat The Mutated Carrier
Inside the lab, you will encounter a powerful enemy known as the Mutated Carrier. This is not a regular zombie. It is a fast-moving infected host that contains unstable viral matter in its bloodstream.
To obtain Infected Blood, you must defeat this enemy without destroying its torso. If you use explosive weapons or deal excessive body damage, the sample may become contaminated and unusable.
Follow these combat tips:
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Aim for the legs to stagger it
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Use controlled headshots
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Avoid grenades
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Keep distance and use environmental obstacles
After defeating the Mutated Carrier correctly, it will drop a Contaminated Blood Sample. Pick it up immediately before leaving the room.
Extract The Infected Blood
The sample you collect is not usable right away. You must refine it.
Take the Contaminated Blood Sample to the Analysis Station located in the same lab. Interact with the machine to begin the extraction process. This triggers a short timed defense sequence where additional infected enemies attempt to interrupt the process.
During this section:
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Barricade doors if possible
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Use flash grenades for crowd control
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Prioritize fast enemies first
Once the timer completes, you will receive Purified Infected Blood. This is the final usable form required for crafting or story progression.
Alternative Method In Hard Mode
In higher difficulty settings, there is an alternate way to get Infected Blood. Instead of fighting the Mutated Carrier, you can complete the Optional Specimen Hunt side mission.
This mission becomes available after speaking with the underground resistance NPC in the Maintenance Tunnel. If you complete the hunt and return the collected samples, you will receive Infected Blood as a reward.
This method is safer but takes longer because you must:
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Track three infected targets
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Solve a containment puzzle
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Survive an ambush event
Choose this path if you want to conserve ammunition or avoid a high-risk boss fight.
Best Strategies For Survival
Getting Infected Blood is not just about finding it. It is about surviving long enough to secure it. Here are some smart strategies:
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Save your game before entering the Quarantine Lab
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Upgrade reload speed on your primary weapon
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Carry at least one emergency heal
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Memorize enemy spawn points after your first attempt
Patience matters. Panic shooting will waste resources and reduce your chances of success.
What To Do After Getting Infected Blood
Once you obtain Purified Infected Blood, you can use it in two main ways:
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Combine it with chemical stabilizers to craft an Antiviral Serum
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Submit it to the main laboratory terminal to unlock Story Chapter 9
If you are aiming for full completion, keep a backup save. Some story choices related to the blood sample can affect which ending you unlock.
