SP-19 is located in which intercostal space?

• A. Third intercostal space
• B. Second intercostal space
• C. Fourth intercostal space
• D. Fifth intercostal space

Answer: (A)

Locations of lateral chest points on the Spleen channel follow the intercostal spaces along the chest wall, using the mammillary line as the reference. SP-19 sits at the level of the third intercostal space, along that chest line. This placement is how the standard charts map the Spleen channel on the chest, and it’s the specific site used for this point. The other spaces would place you at higher or lower points on the chest, not at SP-19.