What Are the Risks of Bone Marrow Tests?

Bleeding and infection are the two most common risks of bone marrow tests, but they're rare.

To prevent bleeding from the site where the needle was inserted, don't do any heavy lifting or vigorous exercise for a few days.

To prevent infection, don't shower or bathe for the first day. After 24 hours, you can take off the bandage. Call your doctor if you develop a fever, have a lot of pain, or see redness, swelling, or discharge at the site. These are signs of infection.

Expect mild discomfort for about a week. Your doctor may tell you to take an over-the-counter pain medicine.

Bone marrow tests are safe for most people. In some cases, these tests aren't safe for people with certain bleeding disorders (like hemophilia). Your doctor can tell you whether bone marrow tests are safe for you.