What causes bruising when donating blood?

Answer 1

It is blood (just a little bit!) leaking under the skin, causing the bruising. It will eventually fade away and nothing to worry about.

Answer 2

Bruising After Giving Blood

Answer 3

I stopped giving blood last year after giving blood for more than 20 years. A woman working in the lab who was experienced insisted on sticking me in veins, not in the arm (opposite of elbow) as she was concerned about using those sites too many times. To make a long story short, she botched the job a few times, causing bruises. After that I decided that maybe I had already given blood too often.
I would do it again now, but only for a specific person who needed it. I'm also registered as a marrow donor. My veins are not weak or difficult to find. This was a botched job. When you give the next time, you might consider having someone else draw the blood.

Answer 4

It is called a hematoma. It is bruising because the person who did the needle either went in too far or not far enough, blood leaked out into the tissues and it caused a bruise. They should have put pressure and ice over the bruise to help it go away..it happens often.. nothing bad though- so dont worry. I teach people how to draw blood. I wouldnt stear ya wrong.

Answer 5

This Site Might Help You.

RE:
What causes bruising when donating blood?

Answer 6

The bruising occurs because of blood escaping to under the skin. This may happen because of poor needle insertion (piercing the vein) or most commonly because of inadequate pressure placed on the phlebotomy site after removal of the needle. Since many blood donations occur via the larger veins of the arm and often times the needle is placed in the concavity of the elbow, many people incorrectly place the gauze pad on the entry site and then bend their arm to staunch the chance of blood flow. This mistake actually leads to more bleeding locally. Place firm pressure with the gauze pad for at least 30 seconds and keep the arm straight.

Answer 7

if it is a large painful briuse what probably happen is that the nurse put the canula (needle) through your vein instead of just into it. I've had that happen and it totally sucks, I looked like a druggie from all the bruising. If it's a small bruise, you didn't put enough pressure on for long enough. For next time remember to press hard and for at least 5 minutes as with that amount of time you're body will begin to patch the hole you've put into the vein with platlets

Answer 8

It is caused by bad technique

Some nurses still prefer butterfly needle for connecting to collecting bag,.. i always discourage it, It can cause counterpuncture of veins.

Anyway it is not anything induced by blood donation as such

Answer 9

In my experience the most common cause is the donor failing to put pressure on the donor site. I have seen people running for help with blood streaming down the arm, because they did not follow instructions.

Answer 10

if they "roll your vein". When ever i have blood drawn, i have to request a butterfly needle with a tube, that extends into the vial. My veins tend to roll easily, and when i use this it takes the pressure off of the vein. sometimes the person who draws the blood may have went too far and went thru the other side.