LCMS sample prep

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Version 2, 27 Mar 2022 at 8:27 AM
Dilute-and-shoot is a simple and rapid analytical method for multi-analyte identification. Although sample preparation is minimal, it remains a critical step to ensure accurate quantitation. The protocols described here use the dilute-and-shoot approach and take advantage of the Andrew+ capabilities to automate sample preparation ensuring maximum pipetting precision and efficient mixing.
Version 1, 30 Jan 2022 at 7:54 AM
Lipids are important molecules involved in energy metabolism, signaling, and membrane formation. They are pivotal in understanding disease and its progression. Here we highlight an automated MTBE liquid-liquid extraction method of lipids and small molecules from biological matrices. The automated method helps streamline this multi-step extraction protocol saving time and reducing operator errors.
Version 2, 30 Jan 2022 at 7:54 AM
Mixed-mode SPE is a sample clean-up technique for LC-MS analysis. Selecting a mixed-mode SPE sorbent can be challenging, requiring a good understanding of the sorbent/analyte chemistry. In addition, it involves accurate and precise pipetting steps. This protocol demonstrates a rapid and robust Andrew+ automated mixed-mode SPE sorbent selection method using the Oasis 2x4 sorbent selection plate.
Version 4, 27 Mar 2022 at 8:27 AM
Protein precipitation is the simplest form of plasma/serum preparation. However, pipetting errors and contamination during sample preparation can impair assay sensitivity, robustness, and precision. In the following work, Andrew+ was used to prepare and extract analytes from complex biological matrices, using the Ostro sample prep plate, with subsequent LC-MS/MS analysis and quantification.
Version 1, 30 Jan 2022 at 7:54 AM
Therapeutic and endogenous peptides can be difficult to extract using SPE with high reproducibility. This is often due to user errors encountered during the extraction process. Here we present an extraction protocol for peptides using the Andrew+ robot which demonstrates rapid and robust automated mixed-mode SPE sorbent selection using the Oasis Peptide Method Development 96 well μElution Plate.