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Include a recognised quantity of the antidepressant protriptyline, which serves as an internal standard, to every serum sample and to every external standard. To get rid of matrix interferents, pass a 0.5-mL aliquot of each serum sample or typical by way of a C18 stable-stage extraction cartridge. Following washing the cartridge to remove the inter
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CDER has restricted information about API suppliers for products which will not have to have an accredited application from FDA to become marketed, for instance compounded and OTC monograph prescription drugs. API suppliers for this kind of items might not register their facility with FDA When they are sending product into a drug solution producer
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