I have donated my blood 3 times now...all three times at different hospitals.
The first time, a very fine needle was used...almost similar to the one usually used in injection or to draw blood for blood tests.
However, subsequently, much broader needles were used...by their looks, they seemed nearly twice as broad as the earlier needle. It also caused more pain than the first time. I guess they use the broader needle to draw blood more quickly.
However, I have noticed another phenomena...the subsequent blood donations have left a depression-type scar mark on my skin.
So I have the following questions:
- Am I right in concluding that a broader needle would have been used to draw blood quickly?
- Are the needles used to draw blood replaceable? Can I ask the nurses drawing my blood to replace the broad needle with a finer one? (I asked the nurse if it was possible and he said that as far as he knew, only broader needles came for blood donation.)
- If the needles are indeed replaceable, then what are they called? How should I refer to them for the nurse to be able to understand me correctly.
This information would help me donate blood relatively painlessly next time.
P.S.: I am not a medical profession (or even a medical student for that matter). So please pardon my complete layman-like language here.