The method of deciding the sensitivity of the suffering inspection body for infection is offered. As for this method, the stage which obtains the sample from the (i) suffering inspection body The stage which detects optional LL-37 which exists in the (ii) sample Being (iii) optional, LL-37 level in the sample and the stage which compares contrast And it is the stage which offers the sensitivity of the suffering inspection body for (iv) infection, thing or LL-37 where LL-37 does not exist low being level, includes the stage which shows the fact that it is sensitivity the suffering inspection body vis-a-vis infection.感染に対する被検体の感受性を決定する方法を提供する。本方法は、(i)被検体から試料を得る段階 (ii)試料に存在する任意のLL-37を検出する段階 (iii)任意で、試料中のLL-37レベルと対照を比較する段階 および(iv)感染に対する被検体の感受性を提供する段階であり、LL-37が存在しないことまたはLL-37が低レベルであることが、被検体が感染に対して感受性であることを示す段階を含む。