Molecular results in 5–15 minutes.

RAA (Recombinase-Aided Amplification) runs at a constant 37–42 °C, so no thermal cycler is needed. Lyophilised reagents and a portable analyzer bring nucleic acid testing to the food-safety bench and the field.

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Eight-well strip of lyophilised RAA reaction tubes
5–15Minutes to result
37–42 °CConstant temperature
29Products, 5 categories
103cfu/mL pathogen LOD
Illustration of a DNA double helix

About RAA

What is RAA?

A recombinase binds tightly to the primer DNA at ambient temperature, forming a recombinase–primer complex. When the primer locates its fully complementary sequence on the template, single-stranded DNA-binding protein helps open the double strand and DNA polymerase synthesises a new complementary strand.

The product accumulates exponentially, and a labelled fluorescent probe lets the reaction be read in real time — typically within 5–15 minutes. All components are pre-mixed and lyophilised in the tube: add Buffer A, Buffer B and the extracted sample nucleic acid.

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RAA Advantages

Why laboratories choose RAA

01.

Simple operation

Molecular-level testing that needs no specialist staff: a two-step workflow of extraction, then one ready-to-use reagent tube.

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02.

Fast

Results in 5–15 minutes on the fluorescence analyzer, against about 1.5 hours for a conventional PCR run.

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03.

Accurate

High sensitivity and specificity: the recombinase–primer complex recognises the target by base pairing, with no cross-reaction observed between species.

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04.

Portable

The Genchek analyzer weighs 3.8 kg and runs on AC or battery, suiting field conditions and on-site inspection.

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05.

Isothermal

Runs at 30–42 °C (optimum 37–39 °C). No thermal cycler: a heat block, water bath or incubator is enough for gel readout.

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06.

Lyophilised

Freeze-dried pellets are ready to use and easy to ship, with no pipetting loss and no freeze–thaw damage. Stored at −20 °C.

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Gloved hand holding an eight-well RAA reaction strip

RAA Core Kits

Technician preparing samples at a clean bench

Extraction Kits

Genchek isothermal fluorescence analyzer

Genchek Analyzer

Technician working at a clean bench in the laboratory

Food Safety Series

Product Lines

Five product lines, one platform

Core amplification enzymes for assay developers, extraction kits that deliver RAA-ready nucleic acid in 5–25 minutes, ready-to-use food-safety kits, and two Genchek instruments to read them.

  • 17 food-safety kits (RUO): 10 animal-species kits at 1 % detection level and 7 foodborne-pathogen kits, 24 tests per kit
  • Genchek analyzer, 8 wells × 2 channels, plus the fully automated system: sample in, result out in 30 minutes
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Services

Support from first run to custom assay

Our R&D team answers every product question with patient explanation and demonstration, and develops new RAA assays when your target is not yet in the catalogue.

Technical support

Consultation, technical documentation, training and operation guides — from weighing the sample to reading the amplification curve.

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After-sales service

Engineers respond promptly and resolve issues by e-mail, phone or video; on-site visits are arranged where they are needed.

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Custom assay development

Primer and probe design for new targets on the RAA platform: foodborne pathogens, meat adulteration, GMO events, aquaculture and animal targets.

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OEM & co-development

Core amplification enzymes and lyophilised formats for assay developers, and RAA-based detection kits co-developed under strategic agreements.

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Need Help?

We are here to help.

Tell us your targets, sample types and monthly volume — we reply with pricing, instructions for use and a recommended workflow.

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Scientist at the bench in the ZC Bioscience laboratory