Abstract: Provided is a technology involving analyzing the state of mRNA of a eukaryote in a simple manner, and facilitating, for example, the proposal of a measure in the event that the state is an unpreferred state. That is, provided is an analysis method for a precursor mRNA, including quantitatively analyzing a removal state of an intron in a precursor mRNA of a eukaryote and outputting information specific to the eukaryote. The presence or absence of an aged-type or presymptomatic disease-type splicing pattern different from a healthy-type splicing pattern is detected from a quantitatively analyzed removal state of the intron. From a pre-made substance list, information on a pharmaceutically acceptable substance for bringing the aged-type or presymptomatic disease-type splicing pattern closer to the healthy-type splicing pattern is identified. The identified information is output as information specific to the eukaryote serving as an analysis object.