Please choose the correct ending to complete the given sentence: Health: [header] How to test bone marrow [title] Make an appointment for the tests with your doctor. [step] Your doctor may perform the bone marrow tests in their office, as they usually take no more than 30 minutes total. Book an appointment for one or both tests, depending on the advice of your doctor.

Ending1: During the appointment, your doctor will discuss any issues you may have, from weakened bones to prescription drugs. They will tell you how much to allow your bone marrow to absorb and how many injections you will need, usually based on your doctor's recommendations. Ending2: The doctor will usually prescribe an appropriate bone marrow test based on their results. [substeps] Bone marrow tests may be on children and adults with kidney issues, such as kidney stones, leukemia, untreated infections, and heart attacks. Ending3: [substeps] You may be asked to discuss potential risks with your doctor before making an appointment. These risks may include increased risk for certain diseases, such as lung cancer. Ending4: [substeps] Your doctor may suggest you get both tests done to have a more detailed range of results. Your doctor may not be equipped to do this test themselves.

Answer format: ending1/ending2/ending3/ending4