New ultrasensitive detection technologies and techniques for use in microdosing studies.

Lappin, Graham, Wagner, Claudia C., Langer, Oliver and van de Merbel, Nico (2009) New ultrasensitive detection technologies and techniques for use in microdosing studies. Bioanalysis, 1 (2). pp. 357-366. ISSN 1757-6199

Full content URL:

Full text not available from this repository.

Item Type:Article
Item Status:Live Archive


In a microdosing study, subpharmacologically active doses of drug are given to human volunteers at an early stage of development in order to obtain preliminary pharmacokinetic data. The very low doses of drug administered (�100 μg) consequently lead to very low concentrations of drug appearing in the body and therefore highly sensitive analytical techniques are required. There are three such analytical technologies currently used in microdosing studies: PET, liquid chromatography (LC)-tandem mass spectrometry (MS/MS) and accelerator mass spectrometry (AMS). Both PET and AMS employ radioisotopic tracers. PET is an imaging technique and AMS is an extremely sensitive isotope ratio method, able to measure drug concentrations in the ag/ml range. LC-MS/MS does not require the presence of an isotopic tracer and its sensitivity is in the pg/ml range. This review examines each of these three analytical modalities in the context of performing microdosing studies.

Keywords:drug, blood, human, liquid chromatography, mass spectrometry, metabolism, methodology, phase 1 clinical trial (topic), positron emission tomography, review, sensitivity and specificity, tandem mass spectrometry, Chromatography, Liquid, Clinical Trials, Phase I as Topic, Humans, Pharmaceutical Preparations, Positron-Emission Tomography, Tandem Mass Spectrometry
Divisions:College of Science > School of Pharmacy
ID Code:8220
Deposited On:21 Mar 2013 17:13

Repository Staff Only: item control page