Key Point
- You get to decide whether to push suspects towards quarantine or liquidate while diagnosing them.
- If you find a suspect with unknown symptoms, then sending them to the lab will help in research.
- Keep in mind that you need to meet the day’s quotas of living inhabitants, so plan accordingly.
Sometimes, you would have to make some tough choices in Quarantine Zone: The Last Check. And one of those choices involves where to send your suspects. You get three choices; either send them to the lab, liquidate them, or send them to quarantine.
Read More: Quarantine Zone: The Last Check – All 6 Poem Locations
Quarantine Zone: The Last Check – Quarantine, Lab, and Liquidate Overview

| When to quarantine | Check for Orange infection signs during diagnosis. |
| When to liquify | Check for Red infection signs during diagnosis. |
| When to send to lab | Send people with unknown symptoms to the lab for further testing. |
What does Quarantine do?
During inspection, if I find the suspect having more orange/yellow symptoms than green or red, I send them to the Quarantine zone. Over here, they are placed under observation for 1 or 2 days. If their symptoms worsen, then they are sent straight to be liquidated so they don’t end up hurting other survivors. If their symptoms get better, then they get to live with other survivors.
What does Liquidate do?
Liquidating potential suspects ends up killing them if they are viewed as a threat. During the inspection stage, look out for more red signs than other colors. Two or more red symptoms means they are infected, so immediately send them to the Liquidation facility to kill them. Also, anyone with clear zombie bites is also a threat, so liquidate them immediately.
What does the Lab do?
Sometimes, while investigating a suspect, I would find that they have an unknown symptom. If you spot this in your chart, it is best to send them to the lab for further testing. The only downside to this is that lab testing will ultimately kill them. If you diagnose the symptom correctly, you will be rewarded with Research Points, else you will face penalties for the wrong decision and faulty death.
FAQs
What is the difference between Liquidate and Lab?
Even though both Liquidate and Lab will kill the suspect, sending a suspect to the Lab is more beneficial to diagnose unknown symptoms and add it to your diagnosis chart. Plus, you will be rewarded 400 RP for correct diagnosis, but you will lose 1,000 RP for wrong diagnosis.
My Quarantined suspect turned into a zombie, what do I do?
You should immediately transfer the infected to the Cage, or liquidate them straightaway. Sending zombies to the lab will help with research, and you will also earn RP after an evac.
Can I send everyone to Quarantine?
It is recommended not to send all your suspects to quarantine in one go, as you need to fill up your day’s Not Infected quota as well. Check out the monitor at the checking zone to see how many suspects you need to correctly diagnose to meet the criteria.
How can I tell when someone is not infected?
If their symptoms show up as mostly green, then they can be safely sent to the Survivors Block and skip the Quarantine zone.
