Which BL point is located 1.5 cun lateral to the midline, at the level of the fourth posterior sacral foramen?

• A. BL 34
• B. BL 27
• C. BL 30
• D. BL 28

Answer: (C)

The Bladder channel has key points along the sacral region that sit at the posterior sacral foramina, each about 1.5 cun lateral to the midline. The description given—located at the level of the fourth posterior sacral foramen and 1.5 cun from the midline—matches the point at that foramen. That point is BL 30. It’s placed there to address issues in the lower back and pelvis, and urinary or gynecological concerns, reflecting the channel’s reach into the lower burner. The other sacral-foramen points sit at neighboring levels, so they don’t fit this exact landmark.