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In vitro RPT screening









Cost effective in vitro and organoid screening to de-risk development

We provide fast, reliable in vitro screening to identify the most promising radiopharmaceutical candidates. 

Our assays utilise hot samples to deliver clean, quantitative data that de-risks early decisions and accelerates progression. 


Radiopharmaceuticals

























What we deliver 

  • Binding and internalisation assays.
  • Receptor/target validation.
  • Radioligand competition assays.
  • Phenotypic and mechanistic readouts.
  • iPSC and primary cell models.
  • Medium throughput screening.

One team. One workflow. One standard of quality.




Why work with us? 

  • In-house specialisms: Deep radiopharmaceutical biology expertise.
  • Translational depth: Integrated in vitroin vivo pathway development.
  • Regulatory‑ready: ISO 45001 certified, in vitro and organoids specialisms, licensed for alpha & beta emitters and predictive human dosimetry from pre-clinical data.
  • Trusted for reliability: Predictive models and mechanistic insight.
  • Global credibility: Our environment is built for regulatory credibility – whether your next step is the FDA, EMA or MHRA.

If you need early data that cuts through noise and accelerates decisions, you need us.

Radiopharmaceuticals - A scientist works at a thermal castle in a radiochemistry laboratory for preclinical workstreams to de-risk radiopharmaceutical investment

























World-class minds for RPT discovery and development

In the complex landscape of radiochemistry and translational imaging, the difference lies in the expertise behind the science.

Our team comprises industry-leading specialists across preclinical services and radiopharmaceuticals, dedicated to bridging the gap between early discovery and clinical success.

Meet the experts who turn sophisticated data into actionable therapeutic insights.

Explore our scientific expertise

Case study: Target engagement screening

Brief: Rapidly screen multiple constructs for target engagement.

We delivered: 

  • Binding and internalisation data.
  • Mechanistic insight.
  • Clear ranking of candidates.

Outcome: One lead selected and progressed to in vivo.


























Start your project 

Ready to accelerate your in vitro RPT screening project? 

Our experts are here to support your journey from concept to clinic. Contact our team to discuss a tailored solution. 

Speak to the team, we’ll scope your project and get you moving fast. 




Expertise in radiolabelling

With gamma, beta and alpha-emitting radiometals of small molecules (e.g., FAPI, PSMA), peptides, proteins and other biologics containing chelators such as DOTA, DOTAM, Macropa, and DFO/DFO*. Experience in a variety of purification methods (e.g., ultrafiltration, SPE), QC analysis (HPLC, ITLC, gamma spectrometry), and conjugation techniques. 

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Visualising impact in real-time

Utilising CDX and PDX models to deliver high-resolution longitudinal tumour growth inhibition (TGI) data and PK/PD analysis. 

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Mapping the path to the target

Quantitative time-course activity analysis across 15+ organ systems using PET, SPECT and CT imaging, EBRT, US, Gamma counting and PK modelling. 

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Ensuring safety and maximising therapeutic windows

Precise calculation of absorbed doses (Voxel/MIRD) to provide reliable preclinical-to-clinical dose extrapolation. 

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The “See it, Treat it” advantage

Strategic pairing of diagnostic/therapeutic isotopes (e.g. 89Zr and 177Lu) to build companion imaging and patient-selection strategies. 

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Early-stage de-risking

High-throughput screening for affinity, internalisation, and stability to identify lead candidates faster. 

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Deep-dive tissue validation

Detailed cellular phenotyping through high-resolution autoradiography, gamma counting, and IHC correlation.

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We are ISO 45001 certified 

The world’s first international standard for occupational health and safety. The accreditation has been certified by Interface NRM, a UKAS and ASI–accredited certification body.











Medicines Discovery Catapult