I know that many here ride bikes. The following is a post I have copied verbatim that is on RiderForums, and is a pretty good example of stuff to have on a bike. I think alot of it can be applicable in other situations as well. One thing that kind of stood out to me was that even if you aren't familiar with all the stuff in a comprehensive medkit, someone else at the scene might be, so even if you are a person who faints at the sight of blood, carrying a kit is still a good idea.

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I don't get by here very often, but I know the folks here are serious riders and will benefit from this tale.

A fellow BMW club member posted the following incident. If he hadn't had a well stocked first aid kit on his bike, the victim probably would not have survived until the EMTs arrived. I have a pretty comprehensive first aid kit, but it is stowed in my side case so it doesn't always travel with me. (I changed that after reading the story, and made a mini kit.)

Even if YOU aren't familiar with all the stuff in a comprehensive kit, someone else at the scene quite possibly will know how to use it. The accident happend just south of the DC Beltway within "minutes" of emergency aid, but it almost ended very differently.
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** First I apologize for this post. Need it out of my head, and it’s not easily readable and a little gory.**
On my way home today traffic started to slow down on I-95S, rubbernecking. As I got closer my heart sunk, a motorcycle on its side, and a biker lying on the road with others just standing around. I cut across three lanes of traffic, parking on the shoulder, and ran over to see if 911 had been called. One lady was on the phone with them, and another gentleman in scrubs parked behind my bike and came running. He had a small auto first aid kit, but that was all, and it didn’t have anything that would help this situation. I ran back to my bike and got my Aerostitch touring first aid kit and returned to the scene. The man was complaining of leg and chest pain, and had a severe laceration on his leg at the knee. He was lying in a puddle of blood that reminded me of a TV show, only this was rapidly congealing. It’s now on the knees of my Stitch too. Darryl, the man on the ground, was bleeding out, and in the modern world of 3-minute response times there was no EMS. They were reported at 5 minutes out, but took another 8 before they were on scene. The man in scrubs was a nurse from a doctor’s office, and was just over me in training. Another lady approached and ID’d herself as a former ER nurse. She was Darryl’s angel.

We quickly devoured my first aid kit supplies, using the triangular sling as a tourniquet. This allowed us (ER Nurse as I struggled to maintain my composure) to pinch the artery off with my hemostats (an addition to my kit for use when the bike is overfilled with gas). This bought Darryl the time needed for EMS to arrive. By this point State Troopers and County Monty’s were showing up, but none with anything comparable to the Stitch kit. EMS arrived and began triage, releasing me from my duties. I hung out until he was transported, grabbed my now empty kit, and vomited in the median. The ride home was somber, and I’m left with a few thoughts:

Without the kit Darryl likely would have died.
The hemostats paid for themselves in saved gas, and now again in saved blood.
I want to go back to college for EMT training.
I will never ride in jeans and a t-shirt again (stopped doing that a while ago anyway, but this seals the deal).
EMS is not always 3 minutes away, and there are times when you have to be prepared to step in, get your hands dirty, and take the lead when it scares the s#$t out of you.
I need a blood test (my kit’s gloves had been pirated during a brake job).
Mike

<Post script: Darryl is in ICU having needed surgery for chest injuries and some reconstruction on his leg. He is expected to recover, though it will likely take weeks.>
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For anyone who wants to pack SOME FIRST AID kit, but doesn't have room for a lunch box size, full out, everything-but-the-kitchen-sink kit, you CAN put together a mini kit to carry that will help in a grave emergency.

All you need is a quart size freezer bag.

SMALL BASIC MOTORCYCLE EMERGENCY KIT:
Trauma Shears - will cut leather, etc.
Emergency Blanket. One of those silver things, the size of a travel pack of Kleenex.
2-4, maxi pads - (yes, feminine hygene pads) OR 9x5 "Ab Sponges"
2-4, 4x4 sterile guaze squares
2 prs, NON Latex medical gloves
Antiseptic Wipes
Saline Solution mini travel size, 2oz, for rinsing wounds or eyes.
Adhesive Strips (Band-Aids)
Adhesive Tape small roll
3" rolled guaze (Kling is recommended because it holds to itself)
Triangular Bandage - can be used as a tournequet, etc.

I hope that everyone can get at least this much on their bikes somewhere and carry it always. It may mean the difference between standing around helplessly and being able to DO something if you or someone you ride with is injured.

Also, take some basic first aid training. It will help you be more in control if YOU find yourself needing to give aid.

Here is the link to a really useful website with a shopping list for a more comprehensive, first aid kit you can put together and carry.
http://stampedemrc.com/survival.htm