What's with the bone marrow needle

Bone marrow puncture needle is a kind of examination to understand the hematopoietic function of the patient's bone marrow and whether there are cells from other tissues and organs in the bone marrow. The process of bone marrow aspiration is very simple. A small amount of bone marrow fluid is extracted from the flat bone of the human body with a fine needle for relevant examination. It can be used for the diagnosis and differential diagnosis of various blood diseases, or for the increase or decrease of the number of red blood cells, white blood cells and platelets of unknown cause and morphological abnormalities, and for the diagnosis and differential diagnosis of fever of unknown cause. Do not wash the puncture site with water within three days after surgery to prevent infection.