TY - JOUR A1 - Neukammer, J. A1 - Hussels, M. A1 - Kummrow, A. A1 - Devonshire, A. A1 - Foy, C. A1 - Huggett, J. A1 - Parkes, H. A1 - Zel, J. A1 - Milavec, M. A1 - Schimmel, H. A1 - Unger, Wolfgang A1 - Akgoz, M. A1 - McHugh, V. A1 - Grunert, H.-P. A1 - Zeichhardt, H. T1 - Survey results on nucleic acid tests of infectious diseases: present status and need for rapid and patient near diagnostics JF - GMS Zeitschrift zur Förderung der Qualitätssicherung in medizinischen Laboratorien N2 - This survey will discuss current and emerging isothermal and rapid polymerase chain reaction (PCR) based nucleic acid amplification methods for patient near diagnostics. To assess the clinical need of rapid diagnostics for infectious diseases based on nucleic acid tests (NATs) we performed and analysed a questionnaire among laboratories participating in corresponding INSTAND ring trials for external quality assurance. The questions concerning new amplification technologies like isothermal nucleic acid amplification, potentially suited to significantly decrease turnaround times, were complemented by questions to evaluate the present status of NATs. Besides end-users, companies were also addressed by sending out a manufacturer specific questionnaire. Analysis of the answers from 48 laboratories in 14 European countries revealed that a much shorter turnaround time is requested for selected pathogens compared to about 2 h or longer when applying temperature cycling amplification, i.e. PCR. In this context, most frequently mentioned were MRSA, norovirus, influenza A and B viruses, cytomegalovirus (CMV) as well as hepatitis B virus (HBV) and hepatitis C virus (HCV). At present, 8% of the laboratories having participated in this survey apply isothermal amplification of nucleic acid to identify infectious pathogens. KW - Nucleic acid tests KW - Infectious diseases KW - Virus detection KW - Bacteria detection KW - Isothermal nucleic acid amplification KW - Status report KW - Questionnaire KW - NAT KW - PCR PY - 2014 UR - https://nbn-resolving.org/urn:nbn:de:0183-lab0000160 UR - http://www.egms.de/static/en/journals/lab/2015-6/lab000016.shtml DO - https://doi.org/10.3205/lab000016 SN - 1869-4241 VL - 6 SP - 1 EP - 11 PB - GMS CY - Düsseldorf AN - OPUS4-36133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sturgeon, R. E. A1 - Wahlen, R. A1 - Brandsch, T. A1 - Fairman, B. A1 - Wolf-Briche, C. A1 - Alonso, J. I. G. A1 - González, P. R. A1 - Encinar, J. R. A1 - Sanz-Medel, A. A1 - Inagaki, K. A1 - Takatsu, A. A1 - Lalere, B. A1 - Monperrus, M. A1 - Zuloaga, O. A1 - Krupp, E. A1 - Amouroux, D. A1 - Donard, O. F. X. A1 - Schimmel, H. A1 - Sejeroe-Olsen, B. A1 - Konieczka, P. A1 - Schultze, P. A1 - Taylor, P. A1 - Hearn, R. A1 - Mackay, L. A1 - Myors, R. A1 - Win, Tin A1 - Liebich, Almuth A1 - Philipp, Rosemarie A1 - Yang, L. A1 - Willie, S. T1 - Determination of tributyltin in marine sediment: Comité Consultatif pour la Quantité de Matière (CCQM) pilot study P-18 international intercomparison JF - Analytical and bioanalytical chemistry N2 - The capabilities of National Metrology Institutes (NMIs—those which are members of the Comité Consultatif pour la Quantité de Matière (CCQM)of the CIPM) and selected outside "expert" laboratories to quantitate (C4H9)3Sn+ (TBT) in a prepared marine sediment were assessed. This exercise was sanctioned by the 7th CCQM meeting, April 4–6, 2001, as an activity of the Inorganic Analysis Working Group and was jointly piloted by the Institute for National Measurement Standards of the National Research Council of Canada (NRC) and the Laboratory of the Government Chemist (LGC), UK. A total of 11 laboratories submitted results (7 NMIs, and 4 external labs). Two external laboratories utilized a standard calibration approach based on a natural abundance TBT standard, whereas all NMIs relied upon isotope dilution mass spectrometry for quantitation. For this purpose, a species specific 117Sn-enriched TBT standard was supplied by the LGC. No sample preparation methodology was prescribed by the piloting laboratories and, by consequence, a variety of approaches was adopted by the participants, including mechanical shaking, sonication, accelerated solvent extraction, microwave assisted extraction and heating in combination with Grignard derivatization, ethylation and direct sampling. Detection techniques included ICP–MS (with GC and HPLC sample introduction), GC–MS, GC–AED and GC–FPD. Recovery of TBT from a control standard (NRCC CRM PACS-2 marine sediment) averaged 93.5±2.4% (n=14). Results for the pilot material averaged 0.680±0.015 µmol kg–1 (n=14; 80.7±1.8 µg kg–1) with a median value of 0.676 µmol kg–1. Overall, performance was substantially better than state-of-the-art expectations and the satisfactory agreement amongst participants permitted scheduling of a follow-up Key comparison for TBT (K-28), a Pilot intercomparison for DBT (P-43), and certification of the test sediment for TBT content and its release as a new Certified Reference Material (HIPA-1) with a TBT content of 0.679±0.089 µmol kg–1 (expanded uncertainty, k=2, as Sn) (80.5±10.6 µg kg–1). Electronic Supplementary Material Supplementary material is available in the online version of this article at http://dx.doi.org/10.1007/s00216-003-2016-9. KW - Tributyltin KW - Marine sediment KW - International intercomparison PY - 2003 DO - https://doi.org/10.1007/s00216-003-2016-9 SN - 1618-2642 SN - 1618-2650 VL - 376 IS - 6 SP - 780 EP - 787 PB - Springer CY - Berlin AN - OPUS4-10905 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -