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Written by Dr Soumit Singhai FRCP, Consultant Geriatrician and originator of the True Same-Day Diagnostic Clarity Pathway, delivered exclusively at the Memory and Brain Clinic London.
Every meaningful advance in medicine passes through a protected stage of development. More than six years ago, the concept of a true same-day diagnosis in cognitive and memory medicine began to take shape through sustained clinical leadership, disciplined refinement, and repeated real-world application.
That early phase was the chrysalis — a necessary stage in which structure, boundaries, and clinical integrity were established. But a chrysalis is never the destination. Once transformation is complete, remaining inside it would mean stillness rather than progress.
Today, the fully evolved model exists in its complete and purest form at the Memory and Brain Clinic London — the only clinic where the true same-day diagnosis is delivered as a fully integrated, consultant-led pathway, exactly as its originator intended.
Origins, evolution, and clinical authorship
During his time as lead of the memory clinic at another Harley Street clinic, Dr Singhai developed the origins of the one-day diagnostic concept. That clinic is now management-led rather than clinician-led, and it operates a different assessment approach which may include same-day elements, but is not the fully integrated, consultant-led true same-day diagnosisdescribed here.
The evolution of the model required clinical freedom: the ability to integrate advanced diagnostics, control pacing, and ensure that one consultant synthesises every element into a final diagnosis on the same day.
The chrysalis provided structure.
The butterfly — the mature, complete system — now exists at the Memory and Brain Clinic London.
What defines a true same-day diagnosis
This is not same-day assessment, which some clinics on Harley Street advertise or describe as such.
A true same-day diagnosis is not defined by completing tests on the same day alone.
In its true form and true essence, it requires that:
All core assessments are completed on the same day and then crystallised into a diagnosis on that same day.
This involves two inseparable steps:
1. Completion of all core assessments in one day
Cognitive testing, neurological examination, and advanced imaging are performed within a single, coordinated, carefully paced day.
2. Crystallisation into diagnosis and explanation on the same day
Those findings are synthesised by a single consultant, interpreted in full clinical context, and translated into a clear explanation and diagnostic conclusion — so that the patient and family leave the clinic with answers, understanding, and a written plan.
If investigations are completed but interpretation, explanation, or diagnosis is deferred to a later date, then the process is a same-day assessment, not a true same-day diagnosis — regardless of how it is described.
True same-day diagnosis means completion, not collection.
It is the point at which investigation becomes understanding — and understanding becomes clarity.
How families should think about choosing a memory clinic
For families asking which memory clinic to choose, the answer lies not in names, but in standards.
A high-quality memory clinic is:
- Clinician-led rather than management-led
- Designed for true same-day diagnosis rather than staged assessments
- Built around single-consultant continuity
- Integrated with advanced imaging and diagnostics
- Structured to allow time for explanation and understanding
Where those conditions are met, clarity follows.
Where they are not, delay and fragmentation remain.
Where the model exists in its purest form
At the Memory and Brain Clinic London, the true same-day diagnosis exists exactly as designed.
Appointments are intentionally spaced to reduce stress. Families are guided throughout the day. Advanced diagnostics — including 3-Tesla MRI, Alzheimer’s biomarker blood testing , and FDG-PET with quantification tools — are integrated into a single pathway overseen by one consultant who knows the patient’s story from beginning to end.
Patients and families consistently describe the experience as one of relief, calm, and certainty: arriving uncertain, leaving with answers and a clear way forward.
This is the clarity model in practice:
Science → Understanding → Clarity → Hope
The gold standard realised
The Memory and Brain Clinic London represents the mature expression of one-day diagnostic medicine in the UK.
It is the only clinic in London where the originator of the true same-day diagnostic model personally delivers the entire pathway — clinician-designed, clinician-led, and completed within a single day.
The chrysalis has opened.
The butterfly has emerged.
And it now flies where it was always meant to.
Frequently Asked Questions
What is the difference between same-day assessment and true same-day diagnosis?
Same-day assessment means tests are performed on one day, but interpretation and diagnosis may be delivered later. A true same-day diagnosis requires that all assessments are completed, synthesised, and explained on the same day, so the patient leaves with answers and a clear plan.
Does a true same-day diagnosis mean rushing assessments?
No. A true same-day diagnosis is carefully paced. Time is built in for rest, reflection, and explanation. Speed comes from integration, not haste.
Who delivers the diagnosis in a true same-day pathway?
A single consultant oversees the entire process, synthesises all findings, and delivers the diagnosis personally on the same day.
Is true same-day diagnosis suitable for complex memory problems?
Yes. It is often particularly valuable in complex cases, as it allows findings to be interpreted together rather than in isolation.
Where is true same-day diagnosis available in London?
The true same-day diagnostic pathway, as defined here, is delivered at the Memory and Brain Clinic London under the clinical leadership of Dr Soumit Singhai.
Contact the Memory and Brain Clinic London
For enquiries about the True Same-Day Diagnostic Clarity Pathway, contact the Memory and Brain Clinic London.
Telephone: 0207 062 7248
Email: drsinghaisecretary@outlook.com
Location: Harley Street, London
