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Illustration of an N Latex aTNFa reagent bottle with icons of rheumatoid arthritis, psioriasis, inflammatory bowel disease

N Latex aTNFα assay

Monitor the effectiveness of TNF alpha inhibitors adalimumab, infliximab, and etanercept with one automated, cost-effective, and easily accessible assay



The N Latex aTNFα assay1 for use on Atellica® NEPH 630,1 BN™ II, and BN ProSpec® Systems is designed to quantify adalimumab, infliximab, and etanercept in human serum. It is an automated, cost-effective assay that enables physicians to make decisions on optimizing the effectiveness of therapeutic anti-inflammatory medication regimens.

Features & Benefits

Flexible assay. Few steps. Fast results.

The N Latex aTNFα assay1 from Siemens Healthineers provides:

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Consolidated, random-access testing and streamlined workflow

  • One assay for quantification of three TNF-alpha inhibitors using individual calibrations
  • Fully automated testing for improved workflow
  • Individual or parallel determination of adalimumab, infliximab, and etanercept from different samples by providing separate assay protocols for each application
  • No need to pool samples
  • Fast turnaround time of less than 10 minutes


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Economical testing and cost efficiency

  • Broad initial measuring range covering the therapeutic range of each substance that helps reduce the need for redilutions and supports economical reagent use
  • Separate calibrators and controls that enable cost-effective use of assay components
  • Ability to measure just one sample without wasting additional testing capacities
Icon showing person with a clip board

Improved patient management and clinical outcomes

  • Insight into response to and effectiveness of anti-inflammatory medication containing adalimumab, infliximab, and etanercept
  • Optimization of individual therapeutic dosage regimens for improved personalized patient management and therapy
  • Potential reduction of injections and/or side effects caused by overmedication to support the patient’s well-being  

Clinical Use

Diagramm showing loss of response in TNF alpha inhibitor therapy

Serum concentration of adalimumab over time for patients whose serum levels dropped below the therapeutic threshold. Graphic adapted from Morrison A, et al. 2015.2

Streamlined therapeutic drug monitoring

The tumor necrosis factor (TNF)-alpha inhibitors adalimumab, infliximab, and etanercept are widely used for therapy of autoimmune diseases such as rheumatoid arthritis (RA), ankylosing spondylitis, and psoriasis. Adalimumab and infliximab are also applied in the inflammatory bowel diseases colitis ulcerosa and Crohn’s disease. Quantification of TNFa-inhibitor levels has been shown to be helpful in identifying non-responders and loss of response and evaluating changes in therapeutic strategy.

Download the brochure and learn how the N Latex aTNFa assay1 can help you gain insight into therapeutic effectiveness, overcome the shortfalls of current testing methods, and enable improved patient and economic outcomes. 

Technical Specifications

Analytical Assay Performance

Expand to learn about the key features of the N Latex aTNFα assay:1

Atellica NEPH 630 System

The N Latex aTNFα assay1 is available on the Atellica NEPH 630 System.1

Available on nephelometric analyzers from Siemens Healthineers and along a complementing inflammatory assay panel

The N Latex aTNFα assay1 is offered as a part of the broadest plasma protein testing menu currently available.3 Offered along with inflammatory parameters calprotectin, α1-acid glycoprotein, CRP, fibrinogen and SAA,1 it supports testing for a comprehensive disease-state picture. It can be easily integrated on the proven Atellica NEPH 630,1 BN II, and BN ProSpec Systems, enabling consolidated testing on one platform, while also avoiding costly send-outs.

1

Not available for sale in the U.S.

2

Morrison A, et al. Defining medication adherence in individual patients. Patient Prefer Adherence. 2015 Jul 1;9:893-7.

3

As of March 2022.

The products/features mentioned here are not commercially available in all countries. Due to regulatory reasons their future availability cannot be guaranteed. Please contact your local Siemens Healthineers organization for further details.

Atellica, BN, BN ProSpec, and all associated marks are trademarks of Siemens Healthcare Diagnostics Inc., or its affiliates. All other trademarks and brands are the property of their respective owners