[johndallman]

First Aid/TL is the IQ/E skill of giving basic, immediate treatment to injuries. This includes treating wounds, burns, poisoning, drowning, and so on. Obscure or unusual problems require a Diagnosis roll first. It takes Physiology modifiers, and defaults to IQ-4, unmodified Physician or Esoteric Medicine, or Vetinary-4. Diagnosis defaults to First Aid-8, Physician to First Aid-11 and Surgery to First Aid-12.

The basic use of First Aid is treating injury and shock, which has not changed much since GURPS 1e. Injuries, Illness and Fatigue, B420-444, has lots more uses for First Aid, and it has specified applications for the disadvantages Bad Back, Haemophilia, Unhealing and Wounded. Being Numb handicaps your ability to do First Aid on yourself. A first aid kit is light and cheap, at $50 and 2lb, and gives +1 to skill, probably the easiest skill bonus from equipment in GURPS. Bandages are basic equipment, and a crash kit gives +2, but at $200 and 10lb, isn't something everyone can carry. IV fluids, and hence TL6, are a requirement for equipment to give +2 or better to First Aid.

Bio-Tech has more details and more equipment, and points out that many First Aid procedures which appeared at TL6 or higher don't require equipment, and thus could reasonably be invented at lower TLs in the right kind of society.

First Aid is really important for people who do dangerous and exciting things; it is not accidental that all modern soldiers, police and firemen are taught it. In modern societies, training is often available free of charge from voluntary organisations. First Aid training for all soldiers was introduced by the Prussian army in 1870, spreading rapidly from there, and being taken up by charities and volunteers. It's a good idea for all adventurers since using First Aid takes long enough that queuing up for the "party healer" can impose serious delays.

First Aid is very common on templates for modern action-orientated characters, and an option for professional combatants at any TL. Action 2 and DF2 deal with the conventions of injury and recovery in their genres, and other books in the DF series have extra equipment and treasures to help with the skill. High-Tech has TL5-8 equipment, and Low-Tech has TL0-4, including some tricks worth using at higher TLs. Infinite Worlds is notable for the number of templates which have First Aid as a compulsory, often primary skill; cross-time travellers often don't get backup. Magic's rules for "worn" items imply that one can remove arrows, etc., stuck in a person with a First Aid roll. Martial Arts explains how Body Control can replace First Aid on yourself, and its Severe Bleeding rules explain the limitations of First Aid, although Low-Tech has a technique that helps with that for some hit locations. You're still in trouble when bleeding from the vitals, though. Monster Hunters lets you inject psi-drugs with First Aid-4, and PU3 and PU7 have examples that include the skill. Enhanced Senses has an ability that helps medical skills. Thaumatology points out that First Aid can't necessarily help with HP lost to spell casting, and provides a ritual whose effects can be improved with First Aid. Ultra-Tech has a lot of medical equipment and a weapon that needs First Aid or Surgery to counter.

In campaigns with several sapient species that aren't wildly different, it might be worthwhile applying the optional specialisation rules in reverse to skills that take Physiology modifiers. That would produce skills like First Aid (All Fantasy Humanoids)/TL, IQ/A, of which the RAW First Aid (specific species) would be considered an optional specialisation. You'd have to apply familiarity penalties per-species.

The best GURPS medic I've ever played was an Action/Reign of Steel medic who improved his Physician skill over the usual 20, to get instant First Aid on better than skill 10. The best straight First Aid user is probably in the Weird War II campaign, who started with skill 14 and has bought up his IQ two points since then: he got quite insistent about teaching it to an IQ 16 party member who didn't see why he needed it.

What has First Aid done for you, other than be a life-saver?