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Electrochemical low-level detection of l-tryptophan in human urine samples: use of pencil graphite leads as electrodes for a fast and cost-effective voltammetric method

Human Urine SamplesElectrochemical Low-level DetectionBiochemistryEngineeringMedicineCost-effective Voltammetric MethodBioanalysisDrug TestAnalytical ChemistryElectroanalytical SensorClinical ChemistryPharmacologyElectrochemistry