MW4 DMZ Hospital Chemical Lab Key
Unconfirmed: reported by the DMZ Codex fan database, read 3 November 2026. Check the grid on the key’s own description in game.
The MW4 DMZ Hospital Chemical Lab Key key reportedly opens the chemical lab in the hospital’s basement morgue; the chemical lockers inside reportedly need separate keys, in Mirae General Hospital, grid F5. Only one source has reported it so far, so treat this page as a lead until a second source or a matching player report agrees.
| Reported grid | F5 |
|---|---|
| Area | Mirae General Hospital (North-central Hajin, former South Korean territory) |
| Reportedly opens | The chemical lab in the hospital’s basement morgue; the chemical lockers inside reportedly need separate keys |
| Rarity | Rare (reported) |
| How to get it | Not reported yet. Keys drop as loot in containers, and Lieutenants can drop the key to their own room. |
| Area threat | Up to Low (Mirae General Hospital, official rating) |
| Status | Unconfirmed, one source |
Where the Hospital Chemical Lab Key is
Hajin’s main hospital, a large multi-level building with triage tents outside and colour-coded wards inside, next to a train station and only Low threat.
The report places the Hospital Chemical Lab Key door in Mirae General Hospital at grid F5: the chemical lab in the hospital’s basement morgue; the chemical lockers inside reportedly need separate keys. Our MW4 DMZ map marks Mirae General Hospital itself, not this door, because the door has not been confirmed. Our grid overlay is approximate, and some reported grids fall outside it, so trust the grid printed on the key in your backpack.
Before you go to Mirae General Hospital
- Mirae General Hospital is rated up to Low threat by Activision. A duo or a careful solo run is realistic, but expect other squads drawn to the same loot.
- Low threat overall, but watch the wooded ridge to the south for snipers.
- Use the colour-coded floor signs to call out positions.
Help confirm the Hospital Chemical Lab Key
Opened this door? Send a screenshot of the key description with its grid, plus one of the door or the room. Two matching reports move the key to the confirmed list, with a map marker and your nickname in the update log.