Technology

Optimising eDNA

Precision and Innovation

Environmental DNA (eDNA) is rapidly transforming how we monitor and understand microbial life, and we’re at the forefront of leveraging this powerful tool to build a healthier world. At Resistomap, our eDNA analysis services are built on high-throughput quantitative PCR (HT-qPCR) technology—a choice driven by two critical advantages: its exceptional quality and precision, combined with the ability to generate high-throughput, quantifiable data suitable for time-series analysis.

As antimicrobial resistance (AMR) continues to pose a serious global challenge, eDNA is emerging as an essential tool in confronting it. On this page, you can get a glimpse into how we utilise advanced molecular technology to harness eDNA, delivering the most comprehensive AMR monitoring service available today.

At the core

The high-throughput qPCR method

The workhorse of our service is HT-qPCR technology, a method designed to quantify genes with both precision and efficiency. This high-throughput approach allows us to screen hundreds of targets simultaneously, detecting ARGs even at low abundance within complex environmental samples.

Unlike standard qPCR, HT-qPCR uses an array-based format that, with high sensitivity and specificity, can quantify multiple genes across hundreds of samples in parallel. This makes it particularly valuable for AMR monitoring, enabling the detection of meaningful changes in resistance gene profiles over time and revealing broader trends. By providing quantifiable, reproducible results, HT-qPCR supports a wide range of applications, from research and surveillance to informed decision-making across environmental, agricultural, industrial, and health-related settings.

Find out more about the technology at TakaraBio's website

Cloud based biosecurity platform

To make the most of the data generated through HT-qPCR analysis, results are explored using the Resistomap Platform — a cloud-based tool for antimicrobial resistance surveillance and reporting. The platform includes four interactive views: the Antibiotic Resistance Gene Index (ARGI), Reduction, and Risk view, as well as a dedicated Research view for more detailed gene-level exploration.

These views allow users to examine results over time, across locations, and at the gene level, with flexible visualisation options for both exploration and reporting. Whether monitoring public health, evaluating treatment processes, or supporting environmental protection efforts, the platform transforms complex qPCR data into meaningful insights.

Protocols supported by robotic precision

Our commitment to reliable data starts in the laboratory, where each sample is processed according to rigorous protocols designed for precision and consistency.

We utilise automation wherever possible, with robotics handling key tasks like pipetting primers and preparing dilutions to minimise variation and ensure uniform processing. Before this, DNA quality and concentration are assessed using spectrophotometry, ensuring that every sample enters the workflow under standardised conditions for accurate and comparable results across studies, locations and time.

The next section provides a general overview of our workflow and the key steps involved in delivering the service.

lab processes

DNA Extraction
For clients without in-house capabilities for environmental DNA extraction, we offer a comprehensive solution that includes DNA extraction using commercial kits specifically optimised for environmental samples. Our protocols cover every step, from filtering and storing samples to secure shipping to our lab, where we handle the entire DNA extraction process.
DNA Quality:
To ensure optimal accuracy in our analyses, we conduct rigorous quality control measures on DNA samples for each analysis, using both spectrophotometry and fluorometry. When needed, we offer DNA purification and dilution services to enhance sample quality. These precise readings and additional services maximise the reliability of results, minimising potential inaccuracies and ultimately saving time and resources.
Gene customisations:
We offer more than 600 primer targets that can be customised to fit your specific research needs, with flexible combinations ranging from 6 genes in 256 samples to 384 genes in 4 samples. Additionally, we provide ready-to-use panels focused on the most clinically relevant genes, giving you reliable options for targeted, high-impact analysis.
Result reporting and visualisation
Customers can access either raw data or actionable insights through our cloud-based Resistomap Platform. The platform offers two distinct views: a research view, which shows gene detection levels and heatmaps, and a platform view, providing a comprehensive overview of AMR levels over time and across geographical regions.

Our platform visualisations generate key metrics, such as:
  • Antibiotic Resistance Gene Index (ARGI):
    A comparable metric for assessing environmental antibiotic resistance gene abundance, derived from the mean relative abundance of a standardised set of highly relevant ARGs.
  • AMR Gene Removal
    A tool to evaluate the efficiency of processes and technologies in reducing AMR pollution, based on the percentage of AMR gene copies removal.
  • AMR Comparative Risk Score
    A feature enabling users to assess and compare AMR risks across different processes and environments, based on quantified AMR gene levels, pathogens, mobile genetic elements and genes associated with environmental pollution markers in water samples. 

The impacts of unchecked AMR are wide-ranging and extremely costly, not only financially but also in terms of global health, food security, environmental well-being and socioeconomic development. Left alone, AMR poses a major threat to delivery of the 2030 Agenda for Sustainable Development..

World Health Organisation

Monitor antibiotic resistance today and make an impact on tomorrow

Contact us to consult how our services can benefit your organisation

FAQs

Find answers to the most common questions about our monitoring service process, gene selection, DNA concentrations and other important information.

See all FAQs
Which genes do you measure? Can we choose the target genes?

In each chip analysis, we can measure up to 384 genes, including 16S rRNA gene (positive control); antibiotic resistance genes (ARGs) targeting aminoglycoside, amphenicol, beta lactam, florphenicol, multidrug efflux-pump, macrolide-lincosamide-streptogramin B (MLSB), trimethoprim, tetracycline, vancomycin; genes targeting other antibacterials such as nisin, bacitracin, antiseptic, mercury; and genes that are associated with mobile genetic elements (MGEs) and integrons.

Yes, you can customise the target genes with an extra customisation fee. The customisation options for chip analysis are:

  • 296 Genes: 5 Samples;
  • 248 Genes: 6 Samples;
  • 216 Genes: 8 Samples;
  • 144 Genes: 12 Samples;
  • 120 Genes: 14 Samples;
  • 96 Genes: 18 Samples;
  • 80 Genes: 21 Samples;
  • 72 Genes: 24 Samples;
  • 54 Genes: 32 Samples;
  • 48 Genes: 36 Samples;
  • 36 Genes: 48 Samples;
  • 24 Genes: 72 Samples;
  • 12 Genes: 128 Samples;
  • and 6 Genes: 256 Samples.

You can choose the target genes based on over 600 previously validated primer sets that are available in our database from the the ARG selection sheet that we will send you separately.

Do you detect pathogens?

Yes, at the moment we have 26 primer sets available to target certain taxonomy group of bacteria and pathogens.

Which sample types do you accept?

We accept all types of samples, e.g., soil, sediment, sludge, manure, stool, meat, tissue, swabs, river, lake, wastewater, and seawater.

How long is the analysis process?

We deliver analysis results within 10 working days. For three or more chips, the analysis process may take longer.

What services do you offer?

In Resistomap we provide antibiotic resistance monitoring services starting from sampling to the final analysis of the SmartChip qPCR results.

Are you working in LMICs?

Contact us to consult how we can support projects for AMR monitoring in the environment.