The Laboratory on Animal Hospital's second floor is one of the game's most experimental systems, and also one of the most confusing if you walk in blind. Four ingredients, 64 possible three-letter codes, and no in-game recipe book means most players waste shifts guessing. This guide covers every confirmed DNA combination recipe, exactly how the crafting process works, and which serums are actually worth making.
How does the DNA crafting system work?
Before mixing anything, you need a DNA sample. Grab the DNA Sampler tool from the Lab on the second floor and use it on a patient lying in a hospital bed. Healthy patients produce a pink DNA sample. Anomaly patients produce a green DNA sample. The color of your sample determines which ingredient combinations will successfully produce a vial, so always track which patient you pulled from.
Animal Hospital DNA Combinations: All Lab Recipes
Bring the sample to the Sequencer and complete the mini-game to prepare it. After that, carry the dish to one of the lab tables and add three ingredients in the correct order. Each ingredient maps to one of the four DNA letters:
| DNA Letter | Ingredient |
|---|---|
| A | Pink Jelly |
| C | Ginger |
| G | Milk |
| T | Purple Mushroom |
If your combination is valid, a 30-second timer starts. When it finishes, take the dish to the Vial Press to produce a glass vial. The vial color tells you what type of serum you made. Pink serums get thrown at patients, visitors, or NPCs. Green serums get drunk by your own character.
The Laboratory unlocks after your first ambulance visit during a shift. If you started in skip tutorial mode, the second floor is accessible from the beginning.
What are all the pink serum recipes in Animal Hospital?
Pink serums target other characters. Throw them at patients or NPCs to trigger the effect. After testing every combination in Roblox, here are all confirmed pink serum recipes:
| DNA Code | Effect |
|---|---|
| TTT | Patient transforms into a Mimic and starts attacking |
| AAA | Shrinks the patient |
| CCC | Patient rapidly produces slime |
| GGG | Transforms the patient into a fish |
| TAG | Makes the patient invisible |
| GAT | Sets the patient on fire |
| AGA | Changes the patient's eyes; looking at them drains your Sanity |
| TTC | Slows the patient down |
| GAC | Patient's fur color cycles constantly |
| CAG | Makes the patient slightly faster |
| ATT | Starts a fire |
| ACA | Gives the patient or NPC hair |
| CTT | Makes the patient extremely fast |
| GCG | Patient begins to glow |
TTT is the most disruptive recipe in the set. Turning a patient into an attacking Mimic mid-shift creates immediate chaos and has real gameplay consequences, making it the go-to choice when you want to stress-test a run. AGA is worth flagging too since the Sanity drain on eye contact can catch you off guard if you forget you threw it.
Animal Hospital DNA Combinations: All Lab Recipes
What are all the green serum recipes in Animal Hospital?
Green serums affect your own character. Drink them to apply the effect to yourself. There are six confirmed green recipes:
| DNA Code | Effect |
|---|---|
| CGT | Your character starts dancing |
| ATA | Shrinks your character |
| ACG | Displays the message "You drank a strange serum" |
| GTG | Transforms you into a Ghost |
| CAC | Transforms you into a Clown |
| TGC | Reduces your detection radius by 5 |
TGC is the only green serum with a direct mechanical benefit. A -5 detection radius means you can move through the hospital with less risk of triggering certain enemy reactions or events, which makes it genuinely useful in tighter shifts. GTG and CAC are mostly cosmetic, but the ghost transformation in particular tends to confuse other players in co-op runs.
Animal Hospital DNA Combinations: All Lab Recipes
For a deeper look at what's hunting you during those shifts, the Animal Hospital all enemies guide breaks down every threat's spawn locations, Sanity damage values, and counters.
What combinations are unstable in Animal Hospital?
Not every three-letter code produces a serum. The following combinations have been confirmed as unstable and will not generate a vial:
- ATG
- CTC
- GAG
- TAT
- TCT
- TGT
One thing worth flagging: the two sources used to compile this guide show a slight discrepancy on a handful of codes. ATA, CAC, GTG, and TCT appear as working green serum recipes in one source and as unstable in another. The green serum table above reflects the data that lists them as functional. Treat those four with some caution until they are more widely confirmed.
Tips for getting the most out of the Laboratory
- Always check your sample color before mixing. A pink sample from a healthy patient and a green sample from an anomaly patient behave differently at the lab table.
- The 30-second timer starts the moment a valid combination is entered. Don't wander off before pressing the Vial Press or you will lose the result.
- TGC is the only recipe with a clear mechanical advantage for survival. Prioritize it when you need to navigate a dangerous shift.
- TTT is the highest-impact pink serum for disrupting the environment. Use it intentionally, not as a test.
- Anomaly management ties directly into how you use the Lab. If you want to understand what you're up against before experimenting, the Animal Hospital anomaly spotting and defeat guide covers every window tell, photo check, and CCTV sign in detail.
The Laboratory rewards players who memorize the four ingredient mappings and keep track of sample color. Once those two things click, the system stops feeling like guesswork. For more Animal Hospital strategies and guides across the full game, browse the complete Roblox guides collection.
