Specialist Registrar training in Chemical Pathology is a 5-year full time pathway designed to transform experienced doctors into Consultant Chemical Pathologists. It builds upon broad-based medical and core training to develop dual expertise in laboratory medicine and metabolic clinical practice.

The training expands the clinical focus: mastering the science of diagnostics whilst simultaneously managing complex patients with metabolic disorders and providing medical leadership within the laboratory from an early stage.

Clinical Training

While Chemical Pathology is traditionally an outpatient-focused specialty, there are increasing opportunities for inpatient involvement. Specialist Registrars will undertake a variety of dedicated metabolic clinics contributing to the diagnosis and management of conditions such as dyslipidaemia, type 2 diabetes, metabolic bone disease, electrolyte disturbances, and inherited metabolic disorders. They also gain experience in Total Parenteral Nutrition (TPN), and will work alongside Endocrinology and other medical teams with a specific focus on the biochemistry driving the patients condition.

Registrars will develop strong clinical reasoning skills, applying biochemical principles to complex patient cases. As training progresses, they take on greater responsibility in direct patient management, working towards medical Consultant-level practice.

From the outset of training, Registrars gain an in-depth understanding of laboratory methods, analytical techniques, and quality assurance processes. A key component of the role is the expert interpretation of biochemical results, not only in the context of patient diagnosis and management support but also in recognising potential analytical issues that could affect clinical decision-making.

Throughout training, Registrars refine their ability to:

• Identify biochemical patterns that may suggest analytical errors or pre-analytical issues. 
• Provide expert guidance on test selection and result interpretation to other clinicians, offering clinical advice and support in the management of biochemical disorders.
• Ensure the clinical relevance of biochemical testing and advise on appropriate follow-up investigations. 
• Contribute to test development and evaluation, ensuring laboratory services remain up to date with advancements in diagnostic science.

Management and Leadership in Laboratory Medicine 

Laboratory management is a core competency in Chemical Pathology. Registrars are expected to step into leadership roles from early in their training to develop the skills required. Responsibilities evolve over time, including:

• Overseeing laboratory workflows and quality control measures. 
• Implementing strategies for demand management and cost-effective test utilisation. 
• Contributing to laboratory accreditation and service improvement initiatives.
• Collaborating with Biomedical Scientists and Clinical Scientists to optimise laboratory processes. 

As training progresses, Registrars develop the confidence to take on senior decision-making roles, ensuring that biochemical services align with the needs of patients and other clinicians.

Research, Education, and Multidisciplinary Collaboration 

Chemical Pathology is at the forefront of translational medicine in a rapidly evolving field. Registrars are actively encouraged to pursue MD or PhD degrees, with ample opportunity to lead quality improvement projects that change hospital-wide protocols.

Registrars will develop skills as an educator. They are expected to contribute to the training and teaching of medical students, Resident Doctors, and importantly biomedical staff, helping to bridge the gap between the laboratory and the clinical teams.

Multidisciplinary collaboration is a key aspect of training, with Registrars working closely with clinical and biomedical scientists within Biochemistry, and colleagues in all specialties across Primary and Secondary Care. This fosters a holistic approach to patient care and enhances the integration of biochemical diagnostics into clinical practice.

Examinations and Professional Development

Furher information on the FRCPath Examinations can be found here: Clinical Biochemistry

Clinical Biochemistry is a dynamic and integral part of Laboratory Medicine: it is the foundation of hospital diagnostics.  Clinical Biochemistry supports patient care by providing biochemical analysis of chemical constituents in biological fluids, primarily blood and urine, to assess organ function, detect metabolic disorders, and guide therapeutic interventions. Ultimately, it provides a crucial role in diagnosis, monitoring, screening and prognosis of a wide range of medical conditions. Chemical Pathologists provide the medical oversight that turns this biological data into essential safe patient care: championing the interface between high-precision science and complex medicine.

Training includes completion of a higher specialist exam FRCPath in Clinical Biochemistry, which defines the necessary skills in laboratory diagnostics and leadership, alongside experience providing actionable clinical advice to clinicians within the primary and secondary care settings based on integrating analytical chemistry with medical decision making.

As physicians in the laboratory, Chemical Pathologists are also essential to the modernisation of pathology: ensuring the service evolves from a passive service provider into a medically active clinical partner that drives decision making across the hospital.

Within the laboratory, Chemical Pathologists work with:

• Clinical Scientists – Experts in biochemical analysis, assay development, and laboratory operations. They play a crucial role in test validation, troubleshooting analytical issues, and contributing to clinical decision-making through specialist interpretation.
• Biomedical Scientists – Specialists in performing and maintaining laboratory tests, ensuring high standards of analytical accuracy and reliability.

Through continuous innovation and close working between Chemical Pathologists, Clinical Scientists, and other healthcare professionals, Clinical Biochemistry plays a vital role in diagnosing and managing diseases, ultimately improving patient outcomes.

Key Areas in Clinical Biochemistry

Routine biochemical tests include measurements of:

• Electrolytes and renal function (e.g., sodium, potassium, creatinine, urea)
• Liver function tests (e.g., ALT, AST, bilirubin, albumin)
• Glucose and lipid profiles (e.g., cholesterol, triglycerides, HbA1c)
• Proteins and enzymes relevant to various metabolic processes

More specialist biochemistry tests are used in the management of complex conditions, and include:

• Endocrinology – e.g hormonal assays for thyroid function, adrenal disorders, and reproductive health
• Toxicology  – Detection of drugs, poisons, and environmental toxins
• Therapeutic Drug Monitoring – Optimisation of medication dosing for conditions such as epilepsy or immunosuppression
• Metabolic and Genetic Disorders – e.g investigation of inherited metabolic disorders
• Tumour Markers – For cancer diagnosis and monitoring

Chemical Pathologists lead clinical interpretation and management with support from their scientific colleagues

• Identifying abnormal patterns that may indicate disease
• Identifying erroneous results due to either pre-analytical or analytical factors
• Ensuring the selection of clinically relevant tests to support diagnostic decision making
• Providing clinically actionable advice to colleagues

Quality Assurance and Laboratory Management

Ensuring the accuracy and reliability of biochemical tests is a critical responsibility for patient safety. This includes processes such as:

• Internal and external quality control to maintain high analytical standards
• Validation of new assays and technologies to improve diagnostic accuracy
• Service development and demand management to optimise laboratory resources and patient care
• Collaboration with clinical and scientific teams to ensure laboratory services align with healthcare needs

 

Ensuring the accuracy and reliability of biochemical tests is a critical responsibility for patient safety. This includes processes such as:

• Internal and external quality control to maintain high analytical standards
• Validation of new assays and technologies to improve diagnostic accuracy
• Service development and demand management to optimise laboratory resources and patient care
• Collaboration with clinical and scientific teams to ensure laboratory services align with healthcare needs

Cardiometabolic medicine is the fastest growing area of Chemical Pathology, focusing on the interplay between cardiovascular and metabolic disorders. Consultants who specialise in this field will be specialists dedicated to the prevention and management of cardiovascular and metabolic disease. They sit at the intersection of laboratory precision and direct patient care, uniquely positioned to tackle the root causes of the world’s most prevalent diseases. This is an exciting area of medicine which is rapidly evolving

Scope of Cardiometabolic Medicine

The field encompasses a broad spectrum of related disorders, including:

• Lipid Disorders – Severe and complex dyslipidaemias, including Familial Hypercholesterolaemia (FH). Chemical Pathologists in this field are responsible for initiating advanced therapies, such as PCKS9 inhibitors and gene silencing agents (siRNAs). They also treat lipid disorders associated with conditions beyond cardiovascular health, such as the prevention of pancreatitis due to hypertriglyceridaemia.
• Medical Management of Obesity – Chemical Pathologists in this field are at the forefront of obesity management. This involves prescribing newer pharmacological agents (GLP-1 Receptor Agonists/Dual agents) and leading the metabolic work-up within multidisciplinary bariatric surgery teams.
• Type 2 Diabetes Mellitus – Optimising glycaemic control and managing associated metabolic risks to prevent long-term complications.
• Hypertension – Understanding its biochemical basis and implications for cardiovascular health, alongside its management in the context of overall cardiovascular risk modification.
• Metabolic Syndrome – Leading the reduction in multifactorial cardiovascular risk.

Emerging Therapies

Cardiometabolic medicine is rapidly evolving with novel pharmacological therapies, particularly in obesity and diabetes management. Advances in GLP-1 receptor agonists and other metabolic agents are transforming the approach to weight loss and glycaemic control. These emerging treatments, alongside evolving lipid-lowering strategies, offer new opportunities for improving patient outcomes. Chemical Pathologists are some of the leaders driving this paradigm shift in how we treat metabolic disease, and many are involved in research trials and industry collaboration.

Chemical Pathologists are essential in providing the metabolic context in this field and leveraging complex laboratory data to drive improvements in population health and cardiovascular disease risk reduction.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Managing and treating disorders of electrolyte and mineral homeostasis require a complex understanding of human physiology and homeostasis. Chemical Pathologists play a critical role in the diagnosis and management of patients with these conditions, integrating biochemical investigations with direct patient care.

Scope of Electrolyte and Mineral Disorders

Electrolyte Disorders – Interpretation of abnormalities in sodium, potassium, and magnesium levels, including pituitary, thyroid and adrenal disease, alongside complex disorders such as syndrome of inappropriate antidiuretic hormone secretion (SIADH) and vasopressin insufficiency and resistance.

Electrolytes are the most frequently requested tests in medicine, yet often the most misunderstood. The Chemical Pathologist is an expert in the underlying physiology and can translate this understanding and biochemical data into a clear diagnosis and treatment plan.

Calcium and Phosphate Homeostasis – Investigation and management of disorders such as hypercalcaemia, hypocalcaemia, and phosphate imbalances, including primary hyperparathyroidism, vitamin D deficiency, and chronic kidney disease-mineral and bone disorder (CKD-MBD).

Metabolic Bone Disease – Diagnosis and treatment of osteoporosis, osteomalacia, Paget’s disease, and rare inherited bone disorders such as hypophosphatasia.

• Complex osteoporosis management: initiating and monitoring advanced therapies such as Teriparatide and Romosozumab
• Renal bone disease: Working in collaboration with renal teams to manage the complex mineral bone disorders associated with chronic kidney disease
• Rare and genetic pathology: Rare disorders such as hypophosphatasia, osteogenesis imperfecta and X-linked Hypophosphataemia, overseeing novel biological therapies such as FGF-23 antibodies
• Disorders of calcium homeostasis: Difficult cases of primary hyperparathyroidism, familial hypocalciuric hypercalcaemia (FHH) and vitamin D resistance

Nutrition-Related Disorders – Assessment and management of malnutrition, refeeding syndrome, micronutrient deficiencies, and metabolic complications of parenteral and enteral nutrition. Chemical Pathologists frequently lead the Nutrition Support Teams in secondary care, conducting ward rounds and reviews of patients with intestinal failure.

Adult Inherited Metabolic Disorders (AIMD) represent a specialised and rapidly evolving field that sits at the interface of clinical biochemistry and clinical medicine. While many inherited metabolic disorders were historically considered paediatric conditions, advances in diagnosis and treatment mean that increasing numbers of patients now require expert, lifelong management into adulthood. This necessitates a unique blend of expertise in biochemical investigation and direct clinical care. While many AIMD physicians are Chemical Pathologists, specialists from a range of disciplines; including nephrology, cardiology, and haematology, also play key roles in delivering comprehensive metabolic care.

Specialist Registrars are expected to undertake a three-month placement within their first three years (ST3-5) within an IMD centre, and suitable placements should be discussed with their TPD.

Scope of Adult Inherited Metabolic Disorders

Adult Inherited Metabolic physicians play a crucial role in the diagnosis, monitoring, and management of a wide range of adult metabolic disorders, including:

• Porphyria – Diagnosing and managing acute and cutaneous porphyria, guiding treatment strategies such as haem arginate therapy and long-term preventative care.
• Mitochondrial Disorders – Identifying biochemical markers of mitochondrial dysfunction, coordinating genetic testing and referral for pre-implantation genetic diagnosis, managing acute admissions, coordination of referrals to broader MDT and optimising metabolic therapies.
• Urea Cycle Defects and related conditions– Managing hyperammonaemia during acute admissions and day-to-day clinical care, providing dietary modifications and pharmacological interventions, overseeing chronic monitoring, and introducing new therapeutic agents and nutritional products.
• Glycogen Storage Diseases (GSDs) – Addressing late-onset manifestations, including metabolic myopathies, renal and liver complications, advising on nutritional and therapeutic management, and management of pregnancy and referral for genetic counselling and High-Risk Pregnancy clinic
• Disorders of Amino Acid Metabolism – Overseeing lifelong management of conditions such as phenylketonuria (PKU) and homocystinuria, including dietary therapies and emerging treatments.
• Disorders of Fatty Acid Oxidation - Diagnosing late-onset cases, monitoring of cardiac and muscle complications, dietary modifications and nutritional support during acute admissions, management of pregnancy.
• Disorders of Organic Acids- Managing hyperammonaemia and metabolic derangements, managing symptoms during acute admissions, advising on dietetic modifications, referral for liver and/or kidney transplantation.
• Disorders of Complex Molecules (including Lysosomal Storage Disorders and Peroxisomal Disorders): Care involves the diagnosis and multidisciplinary management of progressive, multisystem conditions such as Gaucher disease, Fabry disease, mucopolysaccharidoses (MPS), and peroxisomal biogenesis disorders. This includes coordination of enzyme replacement therapies, symptomatic treatment, genetic counselling, and ongoing monitoring of neurological, skeletal, and organ-specific involvement.

Consultant Role in Adult Inherited Metabolic Disorders

As specialists in both clinical and laboratory aspects of metabolic disorders, Chemical Pathologists provide essential expertise in:

• Comprehensive Clinical Assessment – Evaluating patients with known or suspected IMDs, integrating biochemical, genetic, and clinical data for diagnosis and management.
• Specialist Laboratory Interpretation – Overseeing metabolic investigations such as plasma amino acids, organic acids, acylcarnitines, and enzyme assays, ensuring accurate and clinically relevant interpretation.
• Therapeutic Management – Implementing dietary modifications, pharmacological therapies (e.g., carglumic acid, sodium benzoate, glycerol phenylbutyrate, enzyme replacement therapies), and coordinating emergency metabolic management.
• Multidisciplinary Care – Collaborating with other physicians including neurologists, hepatologists, cardiologist, obstetrics and gynaecology specialist and geneticists, alongside other specialists such as dieticians and palliative care nurses to deliver holistic patient-centred care.
• Transition from Paediatric to Adult Services – Facilitating seamless transition care for patients with lifelong metabolic conditions, ensuring continuity in disease management and monitoring, providing holistic patient-centres care with the multidisciplinary team’s care
• Research and Clinical Trials (including Gene Therapies) - Play a key role in advancing research in IMDs, including the delivery of gene therapy and other advanced therapeutics. Responsibilities include contributing to trial design, regulatory submissions, patient recruitment, and long-term monitoring. Collaborate with academic and industry partners to support the translation of innovative treatments into clinical care.
• Education and Training - Educating healthcare professionals about IMDs, with a particular focus on recognising and managing metabolic decompensation and other acute presentations. This includes delivering teaching sessions to junior doctors, emergency department teams, and intensive care units, as well as contributing to multidisciplinary education. Support the development of protocols and educational resources that promote early identification and appropriate referral of patients with suspected metabolic conditions.

Advancing Adult Metabolic Disorders

As awareness of adult-onset and late-presenting metabolic disorders grows, Adult Inherited Metabolic physicians play a pivotal role in expanding and shaping metabolic services. By combining expertise in biochemical diagnostics with hands-on clinical care, they are uniquely equipped to drive innovation, enhance diagnostic precision, tailor treatments, and improve long-term outcomes for adults living with inherited metabolic conditions.

Main Adult Metabolic Centres in the UK

Belfast

Birmingham

Cambridge

Edinburgh

London - UCLH

St Guy’s and Thomas’ Hospital

Salford

Wales

Please contact the Training Department ([email protected]) for indivudal centre details.