thanks nils,
please note however that, unless I have not understood this abstract,
Tolmetin caused false négative results, not false positive ones in this
study
Dr Joseph Watine
Laboratoire de Biologie Polyvalente
Centre Hospitalier Général
Rodez, France
>From: "Nils Tryding" <[log in to unmask]>
>Reply-To: [log in to unmask]
>To: "Joseph WATINE" <[log in to unmask]>
>CC: [log in to unmask]
>Subject: Re: false positive results for urine opiates
>Date: Fri, 30 Jun 2006 11:06:48 +0200 (CEST)
>
>In our databank DECC
>http://www.tryding.se/drug.htm
>You can also find that Tolmetin can interfere in an EMIT assay
>http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=Abstract&list_uids=7723297&query_hl=1&itool=pubmed_DocSum
> J Anal Toxicol. 1995 Jan-Feb;19(1):13-7. Related Articles, Links
>Interference by nonsteroidal anti-inflammatory drugs in EMIT and TDx
>assays for drugs of abuse.
>Joseph R, Dickerson S, Willis R, Frankenfield D, Cone EJ, Smith DR.
>
>With kind regards
>Nils
>Nils Tryding MD PhD
>Andreas Björkmans gata 4,
>Box 57, 296 21 Åhus
>[log in to unmask]
>Tel +4644240007
>Fax +4644241260
>Website http://www.tryding.se
>
> > Apart from rifampicine [1,2] and the quinolones [3-5], which other
> > molecules
> > can cause false positive immunoassay results for urine opiates?
>
> >
> > Many thank in advance,
> >
> > Dr Joseph Watine
> > Laboratoire de Biologie Polyvalente
> > Centre Hospitalier Général
> > Rodez, France
> >
> > 1) de Paula M, Saiz LC, Gonzalez-Revalderia J, Pascual T, Alberola C,
> > Miravalles E. Rifampicin causes false-positive immunoassay results for
> > urine
> > opiates. Clin Chem Lab Med 1998 Apr;36(4):241-3.
> >
> > 2) Herrera Trevilla P, Ortiz Jimenez E, Tena T, Lora Tamayo C. Presence
>of
> > rifampicin in urine causes cross-reactivity with opiates using the KIMS
> > method. J Anal Toxicol 1995 May-Jun;19(3):200.
> >
> > 3) Baden LR, Horowitz G, Jacoby H, Eliopoulos GM. Quinolones and
> > false-positive urine screening for opiates by immunoassay technology.
>JAMA
> > 2001 Dec 26;286(24):3115-9.
> >
> > 4) Zacher JL, Givone DM. False-positive urine opiate screening
>associated
> > with fluoroquinolone use. Ann Pharmacother 2004 Sep;38(9):1525-8. Epub
> > 2004
> > Jul 13.
> >
> > 5) Meatherall R, Dai J. False-positive EMIT II opiates from ofloxacin.
> > Ther
> > Drug Monit 1997 Feb;19(1):98-9.
> >
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