Clinical AI evals · health-data assurance · lifecycle monitoring

Evidence for clinical AI at every stage of deployment.

sinter.bio helps organisations scope, evaluate, validate and monitor clinical AI, healthcare LLMs, OMOP/FHIR and other health-data systems. We turn evaluation into a practical evidence pathway: intended use, benchmarks, safety, equity, implementation and continuous learning.

Risk-proportionateEvaluation design tailored to claim, context and consequence.
Lifecycle evidenceFrom evaluability and validation to regression, monitoring and incident learning.
What we evaluate

Healthcare LLMs, decision-support, RAG, OMOP/FHIR and data pipelines

We support independent evaluations, formative assurance and post-deployment evidence generation for high-stakes digital health systems.

clinical AI evals LLM evaluation benchmark design AI safety equity evaluation OMOP / FHIR assurance implementation evaluation lifecycle monitoring

Services

Each engagement is assembled around the claim being made, the risk profile, the intended users and the evidence needed for a credible decision.

Scope

Evaluability & methods review

Clarify intended use, risk tier, claims, evidence gaps, data access, governance and the right evaluation pathway before large costs are incurred.

Evidence

Clinical AI & data-system evaluation

Benchmark design, expert adjudication, safety and equity evaluation, RAG/LLM evals, interoperability and OMOP/FHIR assurance.

Lifecycle

Monitoring, regression & learning

Version-aware monitoring, release checks, failure capture, decision trace and iterative evidence generation after deployment.

Your evaluation pathway

A clear pathway helps clients understand what happens next, what they receive at each step, and how trust and evidence deepen over time.

1 · Intake

Submit the enquiry

Complete the structured onboarding form so we can understand the product, setting, claims, evidence assets and governance constraints.

You receive: confirmation of receipt and next-step expectations.
2 · Triage

Rapid strategic readout

We assess evaluability, risk, likely modules, missing evidence and fit. Where appropriate, we compare the opportunity to anonymised patterns from prior engagements.

You receive: a short strategic readout with go / hold / refine recommendation.
3 · Scoping

Project pathway & team design

We refine the questions, define deliverables, propose a budget/timeline and assemble the smallest credible multidisciplinary team for the assignment.

You receive: scope note or proposal with milestones, fees and deliverables.
4 · Evaluation

Generate evidence

Depending on the assignment, this may include benchmark design, expert workshops, human–AI studies, safety or equity analysis, implementation work, dashboards and release assurance.

You receive: agreed reports, evidence packs, protocols or dashboards.
5 · Learning

Strengthen the system

We document provenance, decisions and lessons so findings remain reusable for future releases, procurement, publication and real-world improvement.

You receive: a decision trace and recommendations for the next evidence cycle.
Strategic readout

From onboarding to insight

For suitable enquiries, the intake is more than an administrative form. It becomes the basis of an early strategic readout: where the organisation stands, which evidence is missing, which evaluation pathway is proportionate, and how similar cases have approached related challenges.

  • Evaluability status and risk tier
  • Likely evidence modules and dependencies
  • Missing documents, datasets or governance approvals
  • Indicative next step: go / refine / pause
  • Optional anonymised patterning against prior engagements once the internal evidence base is mature enough
Important boundary

Useful benchmarks, careful comparisons

We do not promise spurious “industry rankings” off a tiny sample. Early comparative insights are framed carefully: trend observations, similar-case lessons and maturity signals, always anonymised and only when the internal reference set is credible enough to support them.

Evidence should help organisations decide what to do next — not simply produce a score.

Provenance & learning

No evidence is orphaned. Every decision leaves a trace.

An evaluation produces more than a score. We capture the context needed to interpret the evidence later: what was tested, which version, in which setting, against what reference standard, by whom, with which thresholds, what failed, what changed and why.

Over time, these structured traces can form an assurance context layer linking evidence, decisions, versions, settings and outcomes. That gives client teams an auditable organisational memory for re-evaluation, release decisions, incident review and handover.

Evidence becomes more valuable when its provenance and decision context remain visible.

01
Claim → evidence

Link each claim and decision to the cases, methods and evidence used to test it.

02
Version → context

Record model, prompt, vocabulary, workflow or pipeline version alongside setting and user group.

03
Evidence → decision

Preserve reference standards, adjudication paths, metrics, thresholds and rationale.

04
Failure → learning

Confirmed failures can become governed regression cases for future releases.

Context vocabularies & terminology

Preserve local meaning. Map it without flattening it.

Repeated evaluation metadata can become a controlled vocabulary: stable terms for context, provenance, mapping quality, evidence status and decisions. Over time, that vocabulary can support an ontology and a context graph.

Standards-first

Use established standards where they represent the meaning well.

Where local terms, codes, languages, cadres or workflows are not represented cleanly, preserve them as governed source terms, map them to standard concepts where semantic equivalence exists, and retain the provenance, ambiguity and adjudication needed to interpret that mapping later.

R&D direction: modular African source-term and context vocabularies organised by country, language and domain, with reusable mapping provenance.

01 · Schema
Capture metadata consistently.

Source term, language, country, setting, standard concept, mapping confidence, reviewer, rationale, version and adjudication status.

02 · Vocabulary
Govern recurring terms.

Stable identifiers, definitions, synonyms, allowed values and change history.

03 · Ontology
Define relationships.

Describe how terms, cases, evidence, failures and decisions relate.

04 · Context graph
Connect real evaluation instances.

Link datasets, benchmarks, settings, reviewers, versions, decisions, failures and outcomes.

Africa-rooted, globally relevant

Health AI should be evaluated with the populations and systems it is meant to serve.

We want African evidence to shape global health R&D early enough to influence what gets built, how it is evaluated and what claims are supportable.

sinter.bio has a particular interest in responsibly bringing African clinical data, local contextual knowledge, community priorities and implementation evidence into global health R&D and AI evaluation pipelines.

Evaluation should remain sensitive to language, workflow, infrastructure, disease patterns, population representation and health-system realities. Where community-governed or culturally specific knowledge is relevant, authority, provenance, responsibility, ethics and benefit are explicit parts of the design.

Selected evaluation work

OMOP Bridge

Clinical data-assurance work informing reusable methods for semantic mapping quality, terminology provenance and regression-oriented evaluation.

Current work with OMOP Bridge is helping shape a reproducible evaluation approach for AI-assisted clinical terminology mapping and data transformation. The methodology combines the OHDSI Usagi tool as a comparator with independent expert reference, clinical adjudication, benchmark design, failure taxonomy and regression-oriented testing.

A natural next layer is a governed source-term and mapping-provenance registry: preserving local terminology, country and language context, mapping rationale, ambiguity, reviewer decisions and vocabulary versions while linking to standard OMOP concepts where appropriate.

This case provides an early laboratory for the broader sinter.bio method system: benchmark discipline, evidence provenance, context-aware vocabularies, decision trace and lifecycle assurance.

OMOP CDM OHDSI Usagi comparator Expert adjudication Benchmark design Failure taxonomy Regression testing Vocabulary provenance

The question determines the team

After triage, sinter.bio scopes the disciplines needed for the claim and risk profile, then assembles the smallest credible project team from relevant specialists, subject to availability, independence and conflict checks.

clinical informatics specialty clinicians statistics mathematical modelling software engineering MLOps / eval harness implementation science behavioural science health economics medical anthropology research ethics AI governance

Why the name sinter?

Brand story

A name from metallurgy, chosen for evidence work

In metallurgy, sintering is the process of forming a stronger material by applying heat or pressure so that particles bond and structure emerges — without simply melting everything into one indistinguishable mass.

That idea captures what sinter.bio is trying to do in clinical AI and health-data assurance. We bring together evidence, context, provenance and local knowledge to produce something stronger and more useful for decision-making, while preserving the identity and meaning of the underlying parts.

Preserve local meaning. Strengthen global usability. Keep the trace of how evidence became a decision.

What that means in practice
  • Context is not noise. We preserve the setting, user, risk and workflow conditions that shape whether a system works.
  • Provenance matters. We keep a trace of what was tested, what evidence was used, who reviewed it and why a decision was made.
  • Africa-rooted does not mean isolated. We want African data, contextual knowledge and implementation evidence to inform global health R&D without being flattened or erased.
  • Nothing important gets lost. The goal is not to melt every local signal into a generic standard, but to connect them in a way that remains interpretable, auditable and reusable.
The sintering metaphor

Different evidence elements retain identity while contributing to a stronger whole

Inputs Context Provenance Benchmarks Local knowledge Sintering: stronger, connected, still traceable Assurance output Stronger evidence Decision trace

Who is behind sinter.bio?

Founder of sinter.bio
Founder

Dr Kevin Ememwa

Physician, implementation researcher, research ethicist and clinical-data/AI assurance practitioner. Kevin’s work spans clinical AI evaluation, AI governance, implementation science, OMOP/OHDSI, health-data interoperability and context-aware evaluation in African health systems.

  • 15+ years of health-system and clinical research experience
  • Formal health research ethics training and WHO ethics/governance of AI for health training
  • Active work in OMOP/health-data evaluation and context-aware clinical AI assurance

Start an evaluation enquiry or use the downloadable overview deck for a short introduction.

Common questions

Clinical AI evaluation, in plain language.

Do we need every type of evaluation?

No. Scope is based on intended use, claims, risk, available evidence and the decision that the evaluation needs to support.

Can sinter.bio work with pre-deployment and live systems?

Yes. Engagements can cover evaluability, benchmark and validation work before deployment, as well as production monitoring, incident learning and release-regression assurance after deployment.

Will our confidential data be reused?

Client data and confidential cases are not pooled or reused by default. Any cross-engagement reuse requires explicit rights and appropriate governance.

Can you evaluate OMOP/FHIR and other health-data systems?

Yes. The assurance framework includes terminology mapping, ETL/data transformation, interoperability, provenance, data-quality and related health-data evaluation.

Start here

Tell us what you need to know before you trust it.

Complete the intake and we will determine the appropriate next step: strategic readout, evaluability review, protocol development, benchmark design, independent evaluation or ongoing assurance.

sinter.bio — clinical AI evals, health-data assurance and lifecycle monitoring.
Africa-rooted, globally relevant. Evaluation for intended use, safety, equity, implementation and evidence quality.