Drug MonitoringPhenytoinPharmacology, ClinicalNortriptylinePharmacokineticsPharmaceutical PreparationsChromatography, High Pressure LiquidTriazolesAnticonvulsantsHIV Protease InhibitorsCarbamazepinePharmacological PhenomenaDigoxinDried Blood Spot TestingArea Under CurveImmunosuppressive AgentsTacrolimusFluorescence Polarization ImmunoassayPlasmaMycophenolic AcidPyrimidinonesLopinavirPrimidoneBlood Chemical AnalysisDrug InteractionsDose-Response Relationship, DrugVoltage-Gated Sodium Channel BlockersTheophyllineEthosuximideAntifungal AgentsMycosesPyrimidinesEnzyme Multiplied Immunoassay TechniqueAntidepressive Agents, TricyclicRitonavirCyclosporineChemistry, ClinicalBiological AvailabilityMetabolic Clearance RatePhenobarbitalVancomycinPlicamycinProcainamideBlood Specimen CollectionAnti-HIV AgentsAnti-Bacterial AgentsAntineoplastic Agents6-MercaptopurineHalf-LifeDrug DiscoveryDrug Delivery SystemsBenzoxazinesDrug Evaluation, PreclinicalSpecimen HandlingRifampinHIV InfectionsEpilepsyIsoxazolesXenobioticsKidney TransplantationDrug TherapyNeoplasmsIndinavirNelfinavirTandem Mass SpectrometryMolecular Targeted TherapyDrug-Related Side Effects and Adverse ReactionsGentamicinsModels, BiologicalLithiumDrug CarriersDrug StabilityDrug OverdoseOxazolidinonesTreatment OutcomeDrug Therapy, CombinationReverse Transcriptase InhibitorsPharmacogeneticsBayes TheoremAmikacinTriazinesDrug Administration ScheduleDrug DesignAcetamidesCell Line, TumorImmunoassayRetrospective StudiesReproducibility of ResultsAdministration, OralMonitoring, PhysiologicInjections, IntravenousDisease Models, AnimalValproic AcidSpectrophotometry, UltravioletAryl Hydrocarbon HydroxylasesChromatography, LiquidDrugs, Chinese HerbalCytochrome P-450 CYP3ABlood-Brain BarrierSensitivity and Specificity