There have been a number of questions about how to treat snakebite over the years. The latest one to appear is an oldie -- What should you do if you are bitten by a rattlesnake? -- and one of the answers recommends The Sawyer Kit, which I never heard of until now. (Should I buy one before spring?) Also, prominent underneath the question is this comment:
The answer is the same for pit vipers, which include rattlesnakes, copperheads, and water moccasins. Bites from these snakes are usually not fatal even without medical attention, and in most (or many?) cases they don't use antivenin because the side effects might be worse than a minor snakebite. Also, sometimes pit vipers bite without injecting much or any venom. (This leads to some invalid claims of being immune to snakebites.)
Would it be useful to write an authoritative answer, which would be a synthesis of the best of the old answers and would also specifically address misconceptions and/or erroneous information, and link to the other questions? I know I am proposing quite a bit of work for someone -- it should probably be a collaborative effort among two or three people -- but I think it would be a valuable contribution.