Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MSTouraj Shokati 1, Nicholas Bodenberger 1, Holly Gadpaille 1, Björn Schniedewind 1, Alexander A. Vinks 2, Wenlei Jiang 3, Rita R. Alloway 4, Uwe Christians 1
1iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus, 2Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, 3Food and Drug Administration (FDA), Center of Drug Evaluation Research - Office of Generic Drugs, 4Transplant Clinical Research, University of Cincinnati
Here we describe a high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) assay to quantify the immunosuppressant tacrolimus in dried blood spots using a simple manual protein precipitation step and online column extraction.