Table 1. Reproducibility evaluation of the MALDI-IMS-based quantification method using the surrogate tissue-based calibration standards.

Analyte	Analyte concentration (μg/g)	Signal intensity ratio of analyte/internal standard†	RSD (%)
S-777469	1	0.271±0.057	21.2
	20	1.26±0.15	12.1
	150	7.65±0.56	7.3
RCP	1	0.0499±0.0084	16.8
	5	0.306±0.031	10.1
	20	1.24±0.05	4.4

† Mean±S.D., n=3.