SP-20 is located in which intercostal space?

• A. Second intercostal space
• B. Third intercostal space
• C. First intercostal space
• D. Seventh intercostal space

Answer: (A)

SP-20 sits on the chest along the Spleen channel, in the second intercostal space on the lateral chest near the mid-axillary line. Intercostal spaces are counted from the top between ribs, so this position places the point high on the chest. That level—second intercostal space—is the location designated for SP-20, whereas the first intercostal space would be too high and the third or seventh spaces would be too low. This chest location aligns with the pathway of the Spleen channel across the thorax and is used for issues related to the chest and respiratory area.