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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