A fast inspection in Quarantine Zone: The Last Check is not the one with the fewest tools. It is the one that never needs to be restarted because a covered bite, a second lung spot, an internal object, or an unmarked harmless symptom was missed. The reliable habit is to gather evidence in the same order, record every finding, and choose a destination only after the pass is complete.
This guide builds that habit from the opening visual checks through the late-campaign X-ray, Matioscope, and UV sweep. It also explains when uncertainty belongs in Quarantine, when an unknown symptom justifies the Laboratory, and how an evacuation deadline changes the value of a rapid test. Survivor traits and item placement can vary, so this is a decision protocol rather than a list of predetermined people.
Make the gate choice last
The booth gives you four destinations, but they do not represent four equal guesses. Survivor Block is for a completed pass containing only safe findings. Quarantine is a holding decision for the middle category or unresolved risk. The Laboratory is an irreversible discovery route for a genuinely unknown symptom. Liquidation is for confirmed infected evidence.
| Evidence after a complete pass | Destination | What the decision means |
|---|---|---|
| Only green or harmless findings | Survivor Block | No currently unlocked test found quarantine- or infected-class evidence. |
| At least one orange or ambiguous finding, but no red finding | Quarantine | Hold the survivor and compare the next examination instead of gambling on one uncertain snapshot. |
| An unknown finding that the chart cannot identify | Laboratory | Sacrifice the case to discover a symptom only when that knowledge is worth the irreversible procedure. |
| Any red infected symptom or contaminated biohazard | Liquidation | One infected-class result overrides any number of harmless findings. |
Do not stop the examination when the answer looks obvious. The game evaluates the symptoms you recorded, not just the final gate. A visible bite can settle the destination immediately, yet the rest of the body, vitals, reflexes, breathing, baggage, and later internal checks still matter to a clean inspection. Mark the bite, finish the pass, then send the survivor away.
The reverse error is more dangerous: several harmless signs do not cancel a red one. Freckles, bruises, yellow eyes, or an ordinary nosebleed can coexist with necrosis, a bite, infected breath, a crossed reflex, or contaminated baggage. Read each result independently, then use the most severe verified class.
Add one layer when the campaign gives you one
The campaign teaches the booth in stages. Preserve your original order and insert the new test instead of rebuilding the whole routine every two days. This keeps familiar evidence automatic while leaving attention for the new mechanic.
| Campaign stage | New pressure | Change to the inspection pass |
|---|---|---|
| Days 1-2 | Appearance, basic vitals, and scarce supplies | Learn a fixed face-to-feet visual sweep and compare temperature and pulse with the live chart. |
| Days 3-4 | Reflex testing and base defense | Add one correctly aimed arm or leg strike; keep the booth routine separate from the drone alarm. |
| Days 5-6 | First evacuation and the body scanner | Scan under clothing after the ordinary visual pass, including the back and shoes. |
| Days 7-8 | Contraband, Laboratory, and directives | Run baggage evidence on a separate track and reserve the Lab for a truly unknown symptom. |
| Days 9-10 | Breathing and a caged infected evacuation | Check both sides of the lungs and plan the cage before the evacuation handoff. |
| Days 11-12 | More survivors and limited rapid tests | Use the syringe to resolve a costly bottleneck, not as a replacement for ordinary diagnosis. |
| Days 13-16 | X-ray, internal contraband, and the Matioscope | Inspect every organ view, then search the eye layers with focus rather than rushing across the image. |
| Day 17 onward | Full equipment set and higher throughput | Run the completed loop without skipping categories; save scarce tools for cases that can change capacity or evacuation results. |
This order is a campaign learning curve, not a promise that every randomized survivor will show the same condition on the same day. The person, symptom combination, and obtainable item can differ between runs. The unlock tells you what evidence is now possible; it does not reveal the answer for the next person in line.
Start with light, posture, and a full-body route
Turn the flashlight on before deciding that a dark patch is a symptom. Begin at the face: eye color, pus, bleeding, skin tone, rash, and other exposed marks. Continue down the front of the torso, both arms and hands, the legs, and the shoes. Then move around the survivor and repeat the sweep from behind.
The body scanner belongs after that visual pass. Its job is to expose covered areas, not to replace looking. Move it over the entire outline and crouch for the feet. A bite hidden by clothing or a shoe is still decisive, while a tattoo, dirt, or ordinary bruising can look alarming during a hurried scan. If blood and grime keep obscuring the surface, the scanner upgrade that clears visual noise is more useful than simply moving the cone faster.
Two dark skin findings deserve a deliberate comparison. A red bruise trends toward deep red or purple and belongs in the quarantine-risk column. Necrosis reads cooler and closer to black, often with red tissue inside it, and belongs in the infected column. If the lighting makes that boundary unclear, change the angle, use the flashlight, and check the corresponding chart image before selecting either label.
Posture is a clue about where to spend attention, not a diagnosis. A survivor clutching the abdomen may warrant a careful X-ray later in the campaign. A cough suggests that the stethoscope deserves a precise front-and-back check. Partly closed or light-sensitive eyes justify a patient Matioscope examination. None of those observations should be entered as a red symptom by itself.
Use vitals and reflexes as measurements, not impressions
Hold the Thermopulsometer long enough for the reading to settle, then compare both numbers with the current tablet:
- Temperature below 37°C and pulse below 120 BPM are in the safe band.
- 37-41°C or 120-180 BPM are middle-band findings that call for caution and correlation with the rest of the pass.
- 41-45°C or 180-200 BPM are infected-class readings in the captured full-release chart.
A raised middle-band value is not permission to invent a cause. Sneezing or hiccups can appear alongside elevated readings, but the correct action still comes from the complete set of marked symptoms. If every other unlocked category is harmless, use the chart rather than treating one animation as proof of infection. If several orange findings accumulate, Quarantine gives you a safer comparison point.
The reflex hammer has a mechanical failure mode: striking too high can make a normal response look absent. Aim for the indicated limb area and watch which limb moves. A normal response and an absent response are not the same entry; hyperaggressive movement belongs in the middle category, while the opposite limb responding is the crossed-reflex infected sign. If the animation is unclear, reposition and repeat the correct strike before marking it.
Turn the stethoscope into a two-sided search
Place the stethoscope on the chest, inspect the front lung field, then move behind the survivor. A clean yellow lung view on both sides closes that category. If black areas appear, hover over each one rather than listening at a random point.
The sound pattern decides the entry. Ordinary or sickly breathing can be safe, an unclear or broken respiratory pattern belongs in the middle category, and a growling infected breath is red. The exact sound can be harder to distinguish than a visible bite, so the color-indicator upgrade becomes valuable once this tool is part of every examination.
Do not assume the first black spot is the only one. One spot may produce a harmless result while another carries the meaningful sound. The category is complete only after you have checked every persistent spot on the front and back.
Search every layer of the late-game tools
X-ray: separate organ symptoms from hidden objects
The portable X-ray creates two simultaneous tasks. First, compare organs for bleeding, fatty change, abnormal color, mold, or necrosis. Second, look for foreign objects and internal contraband. Cycle through all available views; an apparently ordinary first layer does not clear the organs or the baggage problem.
Multiple organs can carry different findings. Record each relevant symptom before deciding the fate. Color differences and internal bleeding do not automatically mean the same outcome as mold or organ necrosis. Use the chart’s severity for the specific image you found.
When the gate detector signals contraband but the survivor has no visible bag, internal concealment becomes the likely search target. Mark the internal object, arrange extraction where the current prompt allows it, and still finish the medical pass. An ordinary prohibited item and an infected body part are not equivalent: the first is a confiscation problem, while the biohazard is infected evidence.
Matioscope: focus, scan, then change depth
The Matioscope rewards a grid-like search. Focus the current eye layer until structures become readable, sweep the view in overlapping passes, then change depth and repeat. Fast circular movement creates the illusion that the entire eye was covered while leaving thin edge bands unseen.
Several bacteria or parasites can be present at once. Mark every match. A hard-to-see translucent worm should not be dismissed merely because a brighter object was already found, and a normal-looking eye from the outside does not clear the microscopic layers.
UV: inspect the person and the property during one timer
Activate the UV tower only after the survivor and baggage are positioned for a quick sweep. Check the body first, then the objects on the table. Green vapor by itself is safe in the captured symptom chart; a UV symptom on the survivor or UV-contaminated property is not.
Keep contraband separate until it becomes a biohazard
A prohibited weapon, ammunition, or syringe can require confiscation without proving infection. Search the bag, tag the prohibited item, and remove it through the booth interaction. Do not convert a rule violation into a medical diagnosis.
The boundary changes when the item is contaminated. Zombie parts in luggage, infected internal material, or UV-contaminated property supply infected-class evidence. Record the relevant object state as well as every medical symptom, then use Liquidation. Skipping the body because the bag already settled the destination loses the value of a full diagnosis.
The detector is an alarm, not a location map. Visible luggage should be opened and searched systematically. An alarm with no external bag points toward the X-ray once that tool is unlocked. If the detector is silent, the ordinary body and baggage pass still continues; no single device covers every category.
Use Quarantine and the Laboratory for different uncertainty
Quarantine preserves a person while time supplies more evidence. It is the correct destination when the current pass contains a middle-category symptom, when several weak signs are more concerning together, or when an unlocked test remains ambiguous but no infected-class result is present. Recheck the survivor on the next available round and compare the new chart rather than relying on memory.
The Laboratory does not preserve uncertainty. It converts a case with an Unknown Symptom into future knowledge through an irreversible procedure. Select the unknown entry before sending the survivor, then use the lab camera to find the target organ. Clear obstructing tissue only where necessary, avoid damaging red-highlighted structures, extract the green target, and process the sample in the analyzer.
Do not send every doubtful survivor to the Lab. A known orange symptom belongs in Quarantine. A known red symptom already supplies a destination and only justifies the Lab when unlocking a second, genuinely unknown finding is worth losing the case. Using the Lab as overflow can solve a short-term bed problem while wasting the exact people Quarantine is meant to resolve.
The rapid-test syringe is a third tool, not a third destination. It can answer infected versus not infected immediately, but its uses are limited and ordinary daily restocking does not replace them. Reserve it for a case where the answer changes an imminent decision: the Quarantine block is full, an evacuation threshold is at risk, or a late queue no longer leaves time for observation. Even after the result, record every symptom you can verify before sorting the survivor.
Let evacuation math decide when certainty is valuable
The first campaign evacuation arrives on Day 5, and later handoffs create repeating capacity decisions. Open the evacuation screen and read its live thresholds before moving anyone. A survivor who does not reach the next displayed payout may be more useful in camp for the next handoff, but only if the base can feed, medicate, and house that person safely.
Treat cash, research, and capacity as separate constraints:
- Cash restores fuel and supplies and pays for construction.
- Research accelerates the tools and upgrades that reduce future inspection errors.
- Capacity determines whether an uncertain survivor can spend another day under observation.
Do not blindly copy a fixed evacuation number from a launch guide. Read the current milestone display, meet the required handoff first, then decide whether an extra survivor reaches another reward or should remain for the next cycle. If keeping that person would exceed support capacity after sleep, the future threshold is not free; it carries food, medicine, and outbreak risk.
A caged infected adds another evacuation branch. Keep the cage supplied until the handoff, but do not let that side objective consume the resources that keep the living block stable. Before ending the day, inspect the base panel for fuel, food, medicine, power demand, Survivor Block capacity, and Quarantine capacity. A technically correct booth day can still fail overnight when those numbers are ignored.
Read a bad result as a missing evidence layer
| Failure signal | Likely gap | Correction on the next case |
|---|---|---|
| A bite appears only after the decision | Scanner stopped at the torso | Use a front, back, arms, legs, and shoes route every time. |
| Absent reflex seems inconsistent | Hammer landed too high or the animation was not observed | Aim at the intended limb area and watch which limb responds. |
| Breathing result changes after repositioning | Only one lung spot or one side was checked | Inspect every persistent dark area on both front and back. |
| Detector alarm has no matching bag item | Internal contraband was never searched | Cycle through the X-ray views and mark the foreign object. |
| Matioscope looks empty despite an eye clue | Wrong focus or skipped depth | Focus one layer, sweep it in overlapping bands, then change depth. |
| UV timer ends before baggage is checked | Objects were not staged before activation | Position the survivor and open the bag first, then scan body and table. |
| Correct destination but poor inspection result | Examination stopped at the first decisive symptom | Mark the decisive evidence, finish all unlocked categories, then submit. |
| Morning resource or capacity penalty | Booth decisions were not reconciled with the base panel | Check consumption, reserves, and both housing limits before sleep. |
The full late-campaign booth loop
- Read the bulletin board and note any identity or item condition before calling the next survivor.
- Turn on the flashlight and inspect the face, front, limbs, shoes, and back.
- Let the Thermopulsometer settle; record temperature and pulse separately.
- Test a correct arm or leg target with the reflex hammer and observe which limb moves.
- Scan under clothing over the entire body, including the back and feet.
- Check every persistent lung spot on the front and back with the stethoscope.
- Search visible baggage and mark each prohibited or contaminated object.
- Use X-ray views for organ symptoms and concealed objects.
- Focus and sweep every Matioscope layer when that category is relevant.
- Activate UV only when the survivor and belongings can both be covered during the timer.
- Review the tablet for unmarked findings and let the most severe verified class determine the destination.
- After the queue, reconcile the living block, Quarantine, cage, evacuation plan, and nightly supplies before sleeping.
This order is intentionally repetitive. When pressure rises, the route protects attention: you always know which evidence layer was completed and which one remains. If a new patch changes a category or a tutorial presents a different prompt, keep the order but replace the old rule with the current tablet state.
Sources & credits
Game identity, release metadata, and official screenshots were verified through the official Steam store page. The current version boundary and recent inspection fixes were checked against official Steam announcements. Tool behavior, symptom classification, campaign unlock order, and failure cases were cross-checked against readable community guides and verified walkthrough references captured on July 26, 2026. The live in-game chart takes priority when a randomized case or newer build differs.