Which BL point lies level with the second lumbar vertebra (L2)?

• A. Bl 49
• B. Bl 50
• C. Bl 51
• D. Bl 53

Answer: (D)

Locating BL points along the back is about matching a vertebral level to a specific point on the bladder meridian. The point at the level of the second lumbar vertebra (L2) is BL-53, which is found 3 cun lateral to the posterior midline at that level. This places BL-53 squarely at L2. The other listed points are positioned at different vertebral levels higher up the thoracolumbar region, so they do not align with L2. To locate it clinically, find L2 by palpating the spinous processes, then measure 3 cun laterally to identify BL-53.