my aunt needs some bone marrow, none of my aunts and uncles match. So all the nieces and nephews are going to do blood tests soon. can someone explain to me the procedure and its dangers? Please. Im going to call the nurse tom, but would like to know today. Im a little anxious.

It should be pretty straightforward.  First they will be given blood tests, IF they are suitable donors and I hope they are, then they will undergo what is called a bone marrow aspiration where a tiny amount of bone marow is taken from them. They will likely be asked to lie prone (on their stomach) or to one side.  The skin is cleansed with an antiseptic, and a local anesthetic is injected to make the skin numb.

Then, a tiny thin thin needle is inserted into the bone and advanced inwards with a slow rotating movement until the marrow is found. A small amount of liquid marrow is withdrawn.  The area will be cleaned and pressure applied (just as with a blood draw) and they might have to rest for 10-15 minutes.

Good luck to them!