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    Home»Guides»RE9 – Blood Specimen Reversible Analyzer Puzzle Guide
    Resident Evil 9 Blood Specimen Puzzle Feature Image
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    RE9 – Blood Specimen Reversible Analyzer Puzzle Guide

    By Santosh PandaFebruary 28, 2026Updated:July 21, 20262 Mins Read

    Key Points

    • You will find the Blood Specimen Reversible Analyzer puzzle inside the Blood Lab section.
    • The Blood Specimen (Reversible) item is required to start and complete the entire puzzle.
    • The puzzle requires you to convert or turn all grey-colored atoms into red ones.

    Unlike other puzzles in the game, the Blood Specimen puzzles hide crafting recipes until the player completes the puzzle. The puzzle itself is a bit tricky, and a small mistake can ruin it. The puzzle also has a limited number of turns; we have four turns to solve it.

    Blood Specimen Puzzle Overview

    Puzzle Item RequirementBlood Specimen (Reversible)
    Puzzle LocationBlood Lab
    Puzzle DifficultyMedium
    CharacterGrace
    UnlocksSteroids/ Stabilizer

    Grab the Blood Specimen and then interact with the laser microscope, next to the computer in the Blood Lab. Now we can interact with the puzzle and complete it.

    Blood Specimen Reversible Analyzer Puzzle

    Resident Evil 9 Blood Specimen Puzzle Solution

    Puzzle Description: Our job is to activate all atoms. Just focus on converting all the passive or grey-colored atoms into active, or red-colored ones; and in 4 steps.

    • First: Click on the atom cube on the far left.
    • Second: Click on the atom cube in the middle.
    • Third: Click on the atom cube on the far right.
    • Fourth: Click on the atom cube second from the right, left of the Third atom cube.

    That’s it, you have solved the puzzle, now you will be able to craft the items.

    FAQs

    What will I get by solving the Blood Specimen Reversible Analyzer Puzzle?

    You will be allowed to craft Steroids and Stabilizers. And you will also get to unlock the secret Severed Hand easter egg.

    Is the Blood Specimen Reversible Analyzer Puzzle difficult?

    It’s tricky; a simple mess-up can ruin the puzzle, as you are only allowed to solve the entire puzzle in four turns.

    Can I retry the puzzle?

    Yes, you can retry the puzzle until you get it right.

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    Santosh Panda
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    With 5 years of writing experience, Santosh hopes to help many fight the big monsters, solve intricate puzzles, disarm the hidden traps, and finally open the treasure box.

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