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A biological human lung. A pair of these form the core of the human respiratory system.

Base Stats

Medical ItemsBody Parts
Market Value
1000 Silver
1 kg

Lungs are harvestable human organs that allow a pawn to breathe.


The lung item can be harvested from live humans through surgery. The lung must be perfectly healthy in order to obtain the item. This bill requires 1 of any type of medicine to perform. Success chance is dependent on a number of factors, including bed quality, room cleanliness, and doctor skill - specifically the doctor's Medical Surgery Success Chance. Lungs can be directly harvested, but installing a detoxifier lung Content added by the Biotech DLC will also net an organic lung. Removing both lungs will kill the pawn.

Removing a healthy lung from a guest or prisoner will decrease faction goodwill by 80 points, down to the cap of -100. Removing any organ from anyone depresses the "donor" with -30 mood penalty for 7 days and 7 hours. Other colony members can gain potentially tremendous mood penalties, which all stack:

−5 for "Someone's organ harvested" (any organ); −6 if colonist was harvested
−6 for "Someone organ-murdered" (if fatal)
−5 for "Witnessed ally's death" (if fatal and on colonist)
−4 for "Observed Corpse" (if fatal)

Pawns with the Bloodlust or Psychopath traits, or those with an Ideoligion with Organ Use: AcceptableContent added by the Ideology DLC are not affected by the harvesting of other people. Other Ideologion precepts may change moodlets for harvest and organ use.

Lungs can also be acquired through trading with faction settlements or Exotic Goods traders.


A pawn requires 1 lung to live. Each lung contributes towards 50% of a pawn's Breathing, so losing a lung results in 50% Breathing. Breathing itself affects Consciousness, Moving, and the Rest Rate Multiplier. A completely removed lung would result in -10% Consciousness, -15% to sleep efficiency, and -20% Moving; Consciousness also reduces a variety of other stats.

The tissue of the lungs can be affected by asthma, commonly related to age, smoking, or exposure to harmful substances.


Installing the part requires 2,500 ticks (41.67 secs) of work, 2x medicine of herbal quality or better, and a Medical skill of 5.

Removing the part requires 2,000 ticks (33.33 secs) of work, 1x medicine of herbal quality or better, and has no Medical skill requirements.

If the operation fails, the part has a chance[What Chance?] to be destroyed.


Lungs contribute a substantial amount to a pawn's effectiveness. If one is destroyed, you should aim to replace it as quickly as possible. This can be achieved with either another lung (harvested or traded), a Detoxifier lungContent added by the Biotech DLC, or a Fleshmass lungContent added by the Anomaly DLC.

Asthma and permanent injury are less pressing concerns, but are often worth the penalty for organ harvesting. Harvest a lung from a prisoner, or alternatively a guest or worthless colonist (before abandoning them). Non-natural replacements are immune to Asthma and permanent injury, so may also be considered.

Breathing Right lung
No lung Asthma2 Organic lung Fleshmass lungContent added by the Anomaly DLC Detoxifier lungContent added by the Biotech DLC
Left lung
No lung 00%1 25% 035% 045% 050% 050% 055%
Asthma2 25% 50% 060% 070% 075% 075% 080%
35% 60% 070% 080% 085% 085% 090%
45% 70% 080% 090% 095% 095% 100%
Organic lung 50% 75% 085% 095% 100% 100% 105%
Fleshmass lungContent added by the Anomaly DLC 50% 75% 085% 095% 100% 100% 105%
Detoxifier lungContent added by the Biotech DLC 55% 80% 090% 100% 105% 105% 110%

1 Barring special cases, this means death of the pawn.

2 The order is from most severe (≥45% severity) to least severe.

A lung is worth Silver 1,000, as opposed to a kidney's Silver 900. Lungs also reduce pawn capacity much more than a kidney. A lost kidney reduces Consciousness by 5% and Immunity Gain Speed by 25%.

While worth less than a heart or liver, a pawn can live with 1 lung and 1 kidney harvested. If the mood penalties don't concern you (or don't exist due to IdeoligionContent added by the Ideology DLC), you can harvest 1 lung, 1 kidney, and 1 heart/liver before you kill a pawn. If you harvest a lung and kidney, you can then donate the prisoner to a royal tribute collectorContent added by the Royalty DLC for the same amount of honor as a healthy pawn. Alternatively, if the pawn has the DeathlessContent added by the Biotech DLC gene, you can harvest both lungs, both kidney, heart, and liver at the cost of leaving said pawn permanently bedridden.

Compared to Detoxifier Lung[edit]

Detoxifier lungs are lung replacements that are crafted at a Fabrication bench after the Toxin filtration research project has been completed. Each detoxifier lung requires Plasteel 15 Plasteel, Advanced component 4 Advanced components. Installing a detoxifier lung replaces that respective lung; if the lung is in perfect condition, it is also harvested without penalty.

Detoxifier lungs have a part efficiency of 110%, and grant +60% toxic environment resistance per installed detoxifier lung up to +100%. It's also immune to Asthma.

Compared to Fleshmass Lung[edit]

Fleshmass lungs are lung replacements introduced by Anomaly and can not be crafted. It has no associated item and cost no resources.

Fleshmass lungs have a part efficiency of 100%, grant +30% toxic environment resistance per installed fleshmass lung, and generate +6% pain. It's also immune to Lung rot and Asthma.

Version history[edit]

  • 0.7.581 - Item form added, and now harvestable.
  • ? (Possibly 1.4) - Market value increased from Silver 400 silver to Silver 1000 silver.