This single center study will compare the manual standard bone marrow aspiration device to the powered ported bone marrow aspiration device for use in the posterior iliac crest of healthy adult volunteers for bone marrow aspiration specimen collection. The study will evaluate the quality of specimen yield of the devices, subject reported level of pain with needle insertion and aspiration, and time from needle/periosteum contact to needle insertion and to sample acquisition. Each subject will receive bilateral bone marrow aspiration procedures using both the manual standard and power ported needles. Subjects were randomized for which device procedure was performed first. The second procedure was performed using the other device.
