# Practising for Chemical Pathology (ST3) with MedMock

Canonical page: https://medmock.com/exams/chemical-pathology-st3

## What is the Chemical Pathology ST3 interview, and how do you practise for it?

NHS England does not publish a station format for the Chemical Pathology ST3 interview. These four practice stations cover acute biochemistry case management, laboratory governance, and suitability for higher specialty training. MedMock lets you practise it out loud against an AI interview panel, with examiner-style feedback on any station you finish.

## About Chemical Pathology (ST3) recruitment (official sources, checked 2026-10-13)

- 2025 recruitment round, NHS England figures for Chemical Pathology ST3: 46 applications for 20 posts, a competition ratio of 2.30.
- The East Midlands office of NHS England leads recruitment for Chemical Pathology ST3, covering posts in England, Scotland and Wales if posts are available.
- The indicative length of chemical pathology training is 5 years, following foundation and core training.
- Specialist training from ST3 in chemical pathology now incorporates metabolic medicine in the standard curriculum, rather than as a separate dual accreditation.
- One route for physician applicants is MRCP(UK) Part 1 at the time of application and the full MRCP(UK) diploma by the offer date.

Sources: https://medical.hee.nhs.uk/medical-training-recruitment/medical-specialty-training/competition-ratios/2025-competition-ratios https://www.eastmidlandsdeanery.nhs.uk/recruitment/specialty_recruitment/chemical_pathology https://www.rcpath.org/discover-pathology/careers-in-pathology/train-to-work-in-pathology/training-in-chemical-pathology.html https://medical.hee.nhs.uk/medical-training-recruitment/medical-specialty-training/person-specifications/person-specifications-2026/chemical-pathology-st3-2026

Dates: Chemical Pathology ST3 recruitment is led by the East Midlands office of NHS England, which posts each round on its own page. Its latest round was Round 3: applications from 28 July to 13 August 2026, virtual interviews on 25 September 2026, posts from 1 January 2027. The next round’s dates are not yet published there. (source: NHS England East Midlands).
All Chemical Pathology (ST3) dates: https://medmock.com/exams/chemical-pathology-st3#dates

## Stations you can practise

- **Clinical Station 1** — Examiner-led case viva on acute biochemical disorder workup (e.g. severe hyponatraemia, hypercalcaemia of malignancy, acute adrenal insufficiency).
- **Clinical Station 2** — Examiner-led case viva on a second acute biochemistry scenario (e.g. PHPT vs FHH, hyperosmolar hyperglycaemic state, toxic alcohols).
- **Governance & Management** — Clinical governance, audit, UKAS / ISO 15189 accreditation, critical-result communication, duty of candour, and lab management probes.
- **Portfolio & Suitability** — Motivation for chemical pathology, portfolio strengths, metabolic clinic exposure, reflective practice, suitability for ST3.

## Sample Chemical Pathology (ST3) questions

- *Portfolio & Suitability:* What is your motivation for higher specialty training in chemical pathology?
- *Governance & Management:* Talk me through your understanding of laboratory budget management responsibilities.

## Example scenarios

- *Clinical Station 1:* A 35-year-old presents with confusion and a sodium of 118. Walk me through your biochemical workup and explain how you would manage the correction safely.
- *Governance & Management:* Talk me through a closed-loop audit you have led on critical-result communication in your biochemistry lab — standard, denominator, intervention, re-audit.

## How a practice session works

1. **Choose a station** — Choose the kind of question or scenario you want to rehearse — ethics, motivation, a role-play, and more.
2. **Have the conversation** — Speak naturally, out loud. The AI interviewer listens and asks the demanding follow-ups, just as a real interviewer would.
3. **Get instant feedback** — The moment you finish, you get specific, examiner-style feedback and a score — what you did well, what cost you marks, and precisely what to fix before the next attempt.

## Price

Start with a one-off £5 taster: 30 credits (30 minutes of speaking practice), not a subscription. After that, or instead, £69 per month for 350 credits. One credit is one minute of spoken practice, or two typed exchanges, and where the examiner or patient speaks first, that opening line is free. Examiner scorecards, mark schemes and model answers for finished sessions are included at no extra credit cost. Cancel at any time. Full details: https://medmock.com/pricing

## Frequently asked questions

### How does the feedback work?

When you finish a station you can have it marked, and the scorecard comes back in seconds — what you did well, what cost you marks, and exactly what to work on next. Scorecards, mark schemes and model answers are included at no extra credit cost.

### Can I practise specific Chemical Pathology ST3 stations?

Yes. You can pick any of the 4 stations to drill a weak area, or run a mixed set to simulate the real interview.

### How much does it cost?

You can start with a one-off £5 taster: 30 credits, which is 30 minutes of speaking practice, with no subscription. After that, or at any time, you can choose a monthly plan, which includes a monthly credit allowance. Current prices are on the pricing page.

## About MedMock

MedMock is a web app for practising the spoken parts of UK medical and dental exams and interviews out loud. The candidate talks; an AI patient, examiner or interview panel answers in real time by voice; and when the station ends MedMock marks the performance against that exam's assessment domains and shows the model answer.

It covers 104 spoken exams and interviews — OSCEs, vivas, structured oral exams, simulated consultations, and specialty-training and consultant interviews. It does not cover written or multiple-choice papers, and it is not a question bank.

It was founded by Mr Sam Nahas, MBBS BSc MEd FRCS (Tr & Orth), a practising consultant orthopaedic surgeon in the UK, with co-founder and CTO Arjan Jandu. It is operated by VirtualPatients Ltd (company no. 16303492).

Pricing: a one-off £5 taster of 30 credits to try it (not a subscription, one per account), and a monthly subscription from £20 to £129 depending on the exam (student exams cost least, fellowship exit exams and consultant interviews most), or £199 to £275 for the Intensive plans, which carry more credits. One credit is one minute of spoken practice, or two typed exchanges, and where the examiner or patient speaks first, that opening line is free. Examiner scorecards, mark schemes and model answers for finished sessions are included at no extra credit cost. Subscriptions can be cancelled at any time.

It runs in a web browser on a laptop or phone; spoken practice needs a microphone. There is no public demo: practice needs an account with credits, usually from the taster or a monthly plan.

MedMock is for adults aged 18 or over. Sign-up asks every new account to confirm it.

MedMock is a revision tool. The patients, examiners and cases are fictional and AI-generated; it is not clinical guidance and is not affiliated with or endorsed by any Royal College, the GMC, the GDC or any examining body.

Start with the £5 taster: https://medmock.com/auth/signup