Supplementary material
A high-throughput assay for the quantification of intact Insulin-Like Growth Factor I in human serum using online SPE-LC-HRMS
Suppl. figure 1: Configuration of the two six-port valve switching system. Valves were switched from 1_6 to 1_2 position at 1.5 min, and switched back from 1_2 to 1 _6 position at 7.4 min.