All Symptoms & What They Look Like in Quarantine Zone: The Last Check

Checking survivors for symptoms is the bread and butter of Quarantine Zone: The Last Check. However, not only can some symptoms be hard to spot, but many of them are not known at the start of the game, meaning players must research new symptoms in the laboratory. As such, this guide will not only tell players what all the symptoms in Quarantine Zone are, but it will also show them too, so that players know exactly what to look for.

Related

How to Use the Laboratory to Discover New Symptoms in Quarantine Zone The Last Check

Carrying out research in the laboratory to discover new symptoms in Quarantine Zone: The Last Check can be a tad hard to understand a first.

Posts

By  Joe Grantham

All Body & Skin Symptoms

Appearance symptoms can be spotted by simply looking at the survivor with your eyes, with the aid of a flashlight, and, most importantly, with the scanner, which sees through clothing. Some of the smaller symptoms, such as Bite Marks, can appear anywhere, including the feet, for example. Therefore, it's imperative to check from every angle, walking behind the survivor during the inspection.

Yellow Eyes - Sickness

Very easy to spot, especially with a flashlight.

Freckles - Sickness

These are on the cheeks and can appear in a few different colors.

Herpes - Sickness

Clusters of red vesicles on the skin, anywhere on the body.

Red Skin - Sickness

The cheeks and forehead will be flushed, rosy red.

Bruises - Sickness

Normal bruises, anywhere on the body.

Nosebleed - Sickness

The blood will have come out of both nostrils, unlike Nose Pus, which only comes out of one.

Conjunctivitis - Sickness Or Infection

Redness on the outer part of the eye, but not all of it.

Skin Rash - Sickness Or Infection

Lots of small red or pale spots.

Pale Skin - Sickness Or Infection

Pale all over, almost grey.

Red Bruise - Sickness Or Infection

A large red bruise anywhere on the body.

Skin Cuts - Sickness Or Infection

Lots of frantic cuts that haven't gone too deep. These can be anywhere on the body.

Mouth Bleeding - Sickness Or Infection

Dried blood under the mouth.

Aggression - Sickness Or Infection

The survivor not only looks angry, but talks in an agrressive way too.

Red Eyes - Infected

Fully red eyes apart from the pupil.

Green Skin - Infected

The Green Skin symptom can look more yellow on some individuals and under certain lighting.

Bite Mark - Infected

Two red marks found anywhere on the body.

Necrosis - Infected

Black and dead skin in a large patch anywhere on the body.

Eye Pus - Infected

Yellow/green pus around the eyes. Use a flashlight to see it better.

Nose Pus - Infected

Green pus coming out of one nostril.

Related

Beginner Tips for Quarantine Zone The Last Check

To keep your checkpoint running and save as many lives as possible, consider the following beginner tips for Quarantine Zone: The Last Check.

Posts

By  Joe Grantham

All Pulse & Temperature Symptoms

The Thermopulsometer is used to check for abnormally high pulses and temperatures.

Elevated Pulse - Sickness Or Infection

Between 120-180 bpm, or orange with the visual upgrade.

Elevated Temperature - Sickness Or Infection

Between 37 degrees Celsius and 41 degrees Celsius, or orange with the visual upgrade.

Extreme Pulse - Infected

Over 180 bpm, or red with the visual upgrade.

Extreme Temperature - Infected

Over 41 degrees Celsius, or red with the visual upgrade.

All Stethoscope Symptoms

The Stethoscope is used to listen to black spots on the lungs, although these may disappear if healthy. At first, players will only be aware of one lung symptom, but there are more to be found, bringing the total to three.

Sickly Breath - Sickness

A wheezing sound and bright green with the upgrade.

Nonspecific Respiration - Sickness Or Infection

It's hard to differentiate between this and the Sickly Breath, so get the Stethoscope upgrade and look for it turning a more yellowish green.

Infected Breath - Infected

A low growl, almost like that of a lion. With the upgrade, the Stethoscope will turn red.

Related

Quarantine Zone The Last Check: Survivor Distribution Guide

This guide will help players figure out where they should send survivors based on their characteristics in Quarantine Zone: The Last Check.

Posts

By  Ashely Claudino

All Reflex Hammer Symptoms

Hit survivors on the arm with the medical hammer to see if their reflexes are in order. A normal patient's arm will swing forward after being hit.

Absent Reflex - Sickness

No reaction to being hit by the medical hammer. Their arm will barely even move an inch.

Hyperaggressive Reflex - Sickness Or Infected

After being hit with the hammer, they try to hit you back.

Crosses Reflex - Infected

They react with the opposite limb. For example, you hit them on their right arm, but the left arm responds.

All Matioscope Eye Symptoms

While there are eight symptoms in the retina to look out for with the Matioscope, thankfully all are known when this tool is unlocked. A healthy survivor won't have any of these parasites or anomalies in their eye, but when they do appear, it's often lots at once.

Ocular Spicular Bacterium - Sickness

A pink bacterium with multiple tails.

Thread Cluster - Sickness

A cluster of white strings.

Ocular Helminth - Sickness

A single white string.

Adenoviral Body - Sickness

A yellow/green sphere with long spikes.

Phage Complex - Sickness Or Infection

A red/orange complex with a large head, thin body, and even tails.

Chromatic Staphylococcus - Sickness or Infection

A wispy yellow circle surrounded by black.

Necrotic Plume - Infected

It looks like black ink floating around.

Corneal Infiltrate - Infected

A green sphere with short red circular protrusions.

All X-Ray Organ Symptoms

Upon unlocking the X-Ray in Quarantine Zone, only the Internal Bleeding symptom will be known about, but there are four more to discover in the lab, meaning there is a total of five organ symptoms. These can be hard to spot, as they look different for each organ.

Internal Bleeding - Sickness

The organ is bleeding, red, and scar-covered.

Fatty Hepatosis - Sickness

The organ will be yellow and slightly rotting.

Color Differences - Sickness Or Infection

Organs will be a light purple/pink.

Moldy Organ - Infection

The organ is covered with blue/green spores or mold.

Organ Necrosis - Infection

Dead tissue with black parts, and it is easy to confuse with Internal Bleeding.

Related

How to Deal With the Skeleton Survivor in Quarantine Zone The Last Check

Players will come across a peculiar survivor early on in the Quarantine Zone: The Last Check campaign - here's how to handle them.

Posts 1

By  Ashely Claudino

All UV Symptoms

All the UV symptoms can only be revealed by turning the UV tower on. This is the last tool unlocked.

UV Vaptor - Sickness

When the UV tower is on, a green UV cloud will be seen all around the survivor.

UV Contraband - Infected

If there is a UV mark on contraband, then the survivor should be treated as infected.

UV Symptom - Infected

This could be any sign of infection, such as a bite or eye pus, but it is only visible under UV light.

Rating block community and brand ratings Image

Quarantine Zone: The Last Check

Like

Follow

Followed

Display card tags widget

Zombie

Simulation

Post-Apocalyptic

Display card system widget

Systems

Display card community and brand rating widget Display card open critics widget Display card main info widget

Released

January 12, 2026

Developer(s)

Brigada Games

Publisher(s)

Devolver Digital

Number of Players

Single-player

Steam Deck Compatibility

Unknown

Display card main info widget end Display card media widget start

5 Images

Close

Display card media widget end

• 
• 

Where to play

Close

WHERE TO PLAY

SUBSCRIPTION

• 

DIGITAL

• 

Checkbox: control the expandable behavior of the extra info

Genre(s)

Zombie, Simulation, Post-Apocalyptic

Powered by

Expand Collapse