Skip to main content
Log in

False-positive immunochromatographic CTX-M enzyme test from direct testing of a positive blood culture

  • Letter to the Editor
  • Published:
European Journal of Clinical Microbiology & Infectious Diseases Aims and scope Submit manuscript

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1

Availability of data and materials

All relevant data are within the paper.

References

  1. Bernabeu S, Ratnam KC, Boutal H, Gonzalez C, Vogel A, Devilliers K, Plaisance M, Oueslati S, Malhotra-Kumar S, Dortet L, Fortineau N, Simon S, Volland H, Naas T (2020) A lateral flow immunoassay for the rapid identification of CTX-M-producing Enterobacterales from culture plates and positive blood cultures. Diagnostics (Basel) 10:764

    Article  CAS  Google Scholar 

  2. Bianco G, Boattini M, Iannaccone M, Cavallo R, Costa C (2020) Evaluation of the NG-Test CTX-M MULTI immunochromatographic assay for the rapid detection of CTX-M extended-spectrum-ß-lactamase producers from positive blood cultures. J Hosp Infect 105:341–343

    Article  CAS  Google Scholar 

  3. Bianco G, Boattini M, van Asten SAV, Iannaccone M, Zanotto E, Zaccaria T, Bernards AT, Cavallo R, Costa C (2020) RESIST-5 O.O.K.N.V. and NG-Test Carba 5 assays for the rapid detection of carbapenemase-producing Enterobacterales from positive blood cultures: a comparative study. J Hosp Infect 105:162–166

    Article  CAS  Google Scholar 

  4. NG Biotech (2021) NG-Test CTX-M MULTI package insert. ENO002CTM version 181025

  5. Ortiz de la Rosa JM, Demord A, Poirel L, Greub G, Blanc D, Nordmann P (2021) False immunological detection of CTX-M enzymes in Klebsiella oxytoca. J Clin Microbiol 59:e00609-e621

    Article  Google Scholar 

  6. Giordano L, Fiori B, D’Inzeo T, Parisi G, Liotti FM, Menchinelli G, De AG, De MF, Luzzaro F, Sanguinetti M, Posteraro B, Spanu T (2019) Simplified testing method for direct detection of carbapenemase-producing organisms from positive blood cultures using the NG-Test Carba 5 assay. Antimicrob Agents Chemother 63:e00550-e619

    Article  Google Scholar 

  7. Gatton ML, Ciketic S, Barnwell JW, Cheng Q, Chiodini PL, Incardona S, Bell D, Cunningham J, González IJ (2018) An assessment of false positive rates for malaria rapid diagnostic tests caused by non-Plasmodium infectious agents and immunological factors. PLoS One 13:e0197395

Download references

Acknowledgements

We thank the patient for giving consent for the investigation and publication.

Funding

This work was supported by a grant from the Health and Medical Research Fund (CID-HKU1-13).

Author information

Authors and Affiliations

Authors

Contributions

PLH designed the study. CHL, CWST, SJ, and MKT acquired and analyzed the data. PLH and CHL wrote the manuscript. All authors were involved in critical revision of the manuscript and final approval of the manuscript.

Corresponding author

Correspondence to Pak-Leung Ho.

Ethics declarations

Competing interests

The authors declare no competing interests.

Additional information

Publisher's note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 29 KB)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Lee, CH., Jiang, S., Tong, MK. et al. False-positive immunochromatographic CTX-M enzyme test from direct testing of a positive blood culture. Eur J Clin Microbiol Infect Dis 41, 511–513 (2022). https://doi.org/10.1007/s10096-021-04381-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10096-021-04381-5

Navigation