The 5-Second Trick For high performance liquid chromatography system
Add a known quantity of the antidepressant protriptyline, which serves being an interior typical, to each serum sample and to each external standard. To remove matrix interferents, move a 0.5-mL aliquot of each and every serum sample or conventional by way of a C18 solid-phase extraction cartridge. Just after washing the cartridge to eliminate the