Security 51 Medical Tests Guide

Medical evidence in Security 51 sits near the end of the verification stack. It is more precise than a visual hunch, but it also takes more steps. Use it after documents and the cheaper scan named by the current bulletin, then match the exact result instead of treating all abnormal biology as the same threat.

What is confirmed—and what is not

The official Steam and Alawar pages confirm fingerprint verification, blood testing, quarantine, and delayed consequences. An official pre-release announcement also says the full version adds blood sample analysis and microscopic examination of suspicious specimens.

The retained launch-build walkthrough gives a dated sequence for blood tools: sample analysis appears on Day 21 and blood type testing appears on Day 29. It does not document a specific fingerprint unlock in the observed Day 1–30 route. That means this guide can safely explain the role of fingerprint evidence, but it does not claim an exact day, result layout, or permanent pass/fail threshold that the sources do not prove.

Where medical checks belong

Use this order:

1. Read the daily instructions.
2. Verify identity, numbers, portrait, clearance, destination, and time.
3. Check visible behavior and the cheapest required scan.
4. Ask for a medical certificate when the interface and current finding support it.
5. Use fingerprints when the game provides the tool and identity still needs stronger confirmation.
6. Collect blood only when the bulletin, tutorial, or unresolved evidence requires it.
7. Inspect and print the result before choosing the final action.
8. Apply any stronger allow or security override exactly as written.

Running every medical tool on every visitor creates a slower shift and more chances to confuse results from different people.

Medical certificates

An official demo update confirms forged medical certificates and says their presentation and tutorial were adjusted so the forgery could be identified reliably. Current-build walkthrough observations show certificates being requested after a body or bone finding on early shifts.

Treat the certificate as supporting evidence, not as a replacement for the bulletin:

• First identify the finding that caused the prompt.
• Request the certificate through the correct interface.
• Inspect the certificate using the current tutorial cues.
• Check whether the daily rule distinguishes a forged certificate from a genuine certificate attached to a real anomaly.
• Choose the action named by the bulletin.

A genuine certificate can explain paperwork without necessarily changing a rule that says the underlying body anomaly must be denied. A forged certificate can trigger a stronger security response. Read both clauses.

Fingerprint verification

Official copy describes fingerprints as one of the increasingly accurate identity-verification methods the player gains with experience. The safe interpretation is that fingerprints help answer whether the person at the desk matches an authorized record.

Use fingerprints when available and relevant to:

• Resolve identity doubt after documents appear internally consistent.
• Cross-check a suspected duplicate or impersonator.
• Satisfy a shift rule that explicitly requires biometric confirmation.
• Add evidence before a containment decision when ordinary identification is not enough.

Do not assume that a fingerprint match automatically clears every other problem. A real employee can still lack clearance, arrive outside the time window, carry a forged secondary document, show an infection marker, or trigger a current-day exception. Identity is one layer.

The exact fingerprint unlock day and every possible interface result remain unknown in the retained evidence. If your build presents a fingerprint tutorial, follow that tutorial and the current bulletin rather than an older fan page.

Blood sample analysis and the microscope

The observed launch route introduces blood sample analysis on Day 21. The tutorial has the player collect a sample with the available instrument, place or process it for microscopic inspection, and print the identified finding.

A reliable blood workflow is:

1. Keep the current visitor's documents visible so the sample cannot be mentally assigned to the wrong person.
2. Collect the sample only after the required cheaper checks are complete.
3. Follow the tutorial prompts without skipping an intermediate step.
4. Scan the microscopic field carefully and wait for the named result.
5. Print or record the result before returning to the action buttons.
6. Compare the exact printed name against every blood-related clause in the bulletin.
7. Apply the stronger override if the bulletin distinguishes two findings.

The observed Day 21 instructions treat two named microscopic findings differently. The important reusable fact is not the names themselves; it is that blood anomalies can point to opposite actions within one shift. Never shorten the rule to “abnormal blood equals danger.”

Another observed blood shift appears on Day 24, again with more than one named microscopic outcome. That reinforces the need to print and match the exact finding.

Blood type testing

The observed route adds blood type testing on Day 29. Blood type becomes another result that can coexist with microscopic findings and photographic evidence.

This creates a priority problem. A visitor may satisfy a default deny condition, a security-response condition, and a stronger allow override. Resolve it by following the bulletin's explicit hierarchy, not by deciding which result “feels” more serious.

Keep blood type separate from microscope taxonomy:

• Blood type is the printed classification requested by the new test.
• A microscopic finding is the named organism, cell condition, or other result seen in the sample.
• The bulletin may assign different actions to each.

Avoid sample mix-ups

Long shifts add queue pressure, and medical tools add extra screens. Reduce mistakes with a one-person-at-a-time rule:

• Finish one visitor's document comparison.
• Run the required sample.
• Print and read the result.
• Choose the final action.
• Clear the mental state before the next visitor.

Do not queue a second sample while trying to remember the first person's clearance or photograph. Speed upgrades can reduce waiting, but they do not replace identification discipline.

How medical tests connect to quarantine

Official material presents quarantine as a response when doubt remains and warns that both wrongful confinement and missed threats can have consequences later. A blood or fingerprint result is therefore evidence for containment, not a universal final verdict.

If the current bulletin names a security response, use that response. If the stage presents isolation for a returning elevator threat, use the Quarantine guide to distinguish isolation, extermination, research, and ordinary checkpoint denial. Do not assume every medical mismatch should be sent to the same place.

Common medical-test mistakes

• Testing before finishing free document checks.
• Treating a genuine certificate as automatic clearance.
• Treating every abnormal blood result as the same action.
• Forgetting a stronger allow override tied to one named finding or type.
• Acting before the microscope result is printed and read.
• Mixing the current visitor's sample with the previous visitor's documents.
• Claiming a fingerprint unlock day the retained current-build evidence does not establish.
• Copying demo-only instructions into the full release without checking the current bulletin.

FAQ

When does blood analysis unlock?

The retained launch-build walkthrough observes sample analysis on Day 21. Patches or branching state may change presentation, so use the current tutorial as the authority in your build.

When does blood type unlock?

The observed launch route introduces blood type testing on Day 29.

When do fingerprints unlock?

Official sources confirm fingerprint verification, but the retained Day 1–30 walkthrough evidence does not establish an exact unlock day. This page intentionally leaves it unknown.

Does an abnormal result always mean call security?

No. Daily instructions can assign different actions to different findings, including stronger allow exceptions.

Should I test everyone?

Usually no. Complete the basic checkpoint sequence and run the medical test required by the current rule or unresolved evidence.