Please see our sample-handling guide. In general, sample preparation can be a make or break part of any MS project.  Poor sample quality could preclude identifying the molecules of interest, or could require larger amounts of sample to be provided.  Thus in some cases, direct collaboration with our scientific staff, who can perform some or all of the sample preparation, might add cost to your MS project, but in the end could save material, time and effort.  In most cases, our customers can perform the sample preparation in their own labs but in cases where this cannot be accommodated, this can be accomplished in our laboratories.