Blood Bags and Blood Types

A filled blood bag restores life and cuts hospital time when the type is compatible, then puts you on medical cooldown. An incompatible bag hospitalizes you for about 90 minutes instead. Unlock filling/using bags with Intravenous Therapy (Education).

1. Finish Intravenous Therapy (Biology track).
2. Buy an Empty Blood Bag (Item Market, bazaars, or trades).
3. Fill it when you can spare the life hit and medical cooldown.
4. The filled bag you receive is your type (O−, O+, B−, B+, A−, A+, AB−, or AB+). Write it down before you use any bag to heal.

Rows = your blood type. Columns = bag type. Green (Heal) = compatible. Red (Hosp) ≈ 90 minutes self-hosp.

• AB+ heals from every bag (universal recipient). Hardest to self-hosp with bags alone; use backups from the trade self-hosp list.
• O− only heals from O−. Almost every other bag self-hosps you.
• Quick self-hosp pick: any red cell in your row.

Self-sufficient loop: buy empties → fill them → keep stacks of your type for healing and of an incompatible type for self-hosp. You can also buy filled bags of other types.

• Heal bags - compatible types for your row. Expect medical cooldown after use.
• Hosp bags - any red cell in your row. Refresh the timer with another wrong bag while already in hospital if you need to stay down.
• Each fill costs life and medical cooldown - do not fill right before a fight when you need meds ready.
• War tip: small first-aid kits for tiny life tops; save bags for long hospital timers (Ranked wars).
• Empty and filled bags are also trade goods; prices move with wars and events.

1. Finish Intravenous Therapy if you have not.
2. Fill one empty bag; record your type.
3. Stock heal bags (your type) and hosp bags (any red cell).
4. Before large trades / open bazaar cash: follow How to trade → Self-hospitalize.

• Torn wiki - Empty Blood Bag
• Torn wiki - Education: Biology
• How to trade - Self-hospitalize
• Education courses and paths