Haematology consultation (Clinical haematology outpatient consultation)
An appointment with a blood specialist (haematologist) to look into an abnormal blood result or symptom, work out the cause, and agree what should happen next.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- A haematology consultation is an appointment with a blood specialist to investigate an abnormal blood result or symptom and agree a plan.
- It often cannot give a final answer on the day; some results take time, and a few people need further tests such as a scan or bone marrow test.
- Most people seen in a general haematology clinic do not have cancer — many blood-count changes have ordinary causes.
- Bring your previous results, your medicines list and a clear history of your symptoms, as these shape the whole assessment.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Expert interpretation of an abnormal blood result in the context of your whole health
You have an emergency such as heavy uncontrolled bleeding, signs of a clot, or severe symptoms — these need urgent or A&E care, not a routine clinic...
You discuss your results, are examined, often have blood taken, and agree a plan. Ask anything you are unsure about before you leave.
A clear written plan and clinic letter to you and your GP.
You discuss your results, are examined, often have blood taken, and agree a plan. Ask anything you are unsure...
Further blood results come back. A clinic letter is usually sent to you and your GP summarising the visit and the...
Depending on results you may be reassured and discharged, asked to repeat a test, started on treatment, or given...
You are contacted with next steps, which may include more tests, a scan, a bone marrow test, or referral for...
What is a haematology consultation?
Haematology is the branch of medicine that deals with the blood, bone marrow and the glands that make and store blood cells (the lymph nodes and spleen). A haematology consultation is an appointment with a haematologist, a doctor who specialises in these.
Most people are referred because a blood test showed something unexpected — for example a low or high count — or because of symptoms such as tiredness, easy bruising, bleeding, swollen glands or a clot. The appointment is to understand the result in the context of you as a whole person, not just the number.
It is worth knowing that most people referred to a general haematology clinic do not turn out to have cancer. Many abnormal counts have ordinary explanations. The consultation exists to find the cause and decide whether anything needs treating, watching, or no action at all.
A first appointment is mostly talking and examination, often with blood tests on the day. It usually ends with a plan and, sometimes, a wait for further results before a firm answer.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Options at a glance
These are the main approaches described in this guide. The right option depends on the diagnosis, your goals and what your clinician thinks is safe.
History and symptoms
The haematologist asks about your symptoms, past health, medicines, family history and lifestyle, which often points strongly to the cause.
Examination
They may check for pale skin, bruising, swollen glands, or an enlarged spleen or liver, depending on the problem.
Blood tests on the day
Further blood samples are often taken to add detail, such as iron studies, vitamin levels, a blood film, or clotting tests.
Further investigations if needed
Some people are arranged a scan (such as an ultrasound or CT) or, less often, a bone marrow test to reach a diagnosis.
Preparing for your appointment
- Bring or have access to your recent and past blood results, and any clinic or GP letters.
- Bring an up-to-date list of all your medicines, supplements and any blood-thinners.
- Note your main symptoms, when they started and how they are changing.
- Think about family history of blood problems, clots, bleeding or cancers.
- Mention recent illnesses, infections, travel, pregnancy or heavy periods, as these affect blood counts.
- Write down your questions and what you most want to understand or rule out.
- Expect that blood may be taken on the day, so stay hydrated unless told to fast.
- Bring someone with you if you would like support remembering the discussion.
What happens
The haematologist goes through your history in detail and examines you as needed. They explain what your existing results show and what they still need to find out.
Blood is often taken on the day for further tests, and sometimes a scan or other investigation is arranged. For some problems the answer is clear at the visit; for others you will be told it depends on results that take days to come back.
You should leave with a plan you understand: whether anything needs treating now, what is being checked, when you will get results, and who to contact. A letter usually follows to you and your GP summarising the visit.
Is this appointment right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- You have an emergency such as heavy uncontrolled bleeding, signs of a clot, or severe symptoms — these need urgent or A&E care, not a routine clinic appointment.
- Your problem is clearly not blood-related and a different specialty would be more appropriate.
- You want a consultation instead of, rather than as well as, sharing results with your GP for ongoing care.
- You expect a guaranteed diagnosis on the day, which is often not possible.
Delay or rearrange if…
- You have an active infection or recent illness that may temporarily change your blood counts, unless the appointment is to investigate that.
- Key previous results or letters are not available and could be gathered first.
- You are between tests and a result that would change the plan is still awaited.
- You have a sudden severe symptom that needs urgent assessment first.
Alternatives to discuss
- An NHS haematology referral through your GP.
- GP review and repeat testing if the abnormality is minor and may be temporary.
- A different specialist if the underlying problem is not primarily blood-related.
- Watchful waiting with repeat blood counts for borderline results.
- A telephone or video consultation where examination is not essential.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Benefits
- Expert interpretation of an abnormal blood result in the context of your whole health
- A clear plan, which is often reassurance rather than treatment
- The right further tests arranged, avoiding unnecessary ones
- Earlier diagnosis where something does need treating
- A written summary for you and your GP so everyone is on the same page
Risks & complications
- Not getting a final answer on the day, as some results take time
- Anxiety while waiting for results
- Needing further blood tests or a repeat appointment
- Minor bruising or discomfort from blood being taken
- Being referred on for a scan or bone marrow test you had not expected
- An incidental finding that leads to more investigation
- A private result that needs your NHS GP to act on it, which takes coordination
- Being given a serious diagnosis, such as a blood cancer, which then needs specialist care
- Conflicting interpretations between clinicians, needing a further opinion
The main 'risk' of a consultation is uncertainty: a first visit often cannot give a complete answer, and the wait for results can be worrying. The most important things to clarify are what is being investigated, when you will get results, what would count as urgent, and who to contact in the meantime. If you are seen privately, make sure results are shared with your NHS GP.
Published figures to discuss
A consultation is an assessment, not a procedure, so meaningful complication rates do not really apply. The relevant uncertainties are diagnostic: how often a result is reassuring, needs repeating, or leads to further tests varies entirely with the reason for referral, so no fixed figures are given.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Diagnosis not final after first visit | Common | Blood films, repeat tests, scans, genetics or bone marrow testing may be needed before a firm diagnosis. | Guide sourcesClinical context |
| Urgent blood-count problem missed | Safety-critical | Severe anaemia, very low platelets, neutropenic fever, suspected clot/PE or blasts can need same-day action. | Guide sourcesClinical context |
| Incidental abnormality over-treated | Recognised | Some mild or stable abnormalities are monitored rather than treated immediately. | Guide sourcesClinical context |
| Family/genetic implications not discussed | Condition-dependent | Haemoglobin disorders, bleeding disorders, thrombophilia and some blood cancers may affect relatives. | Cambridge University Hospitals NHS — Your first visit to the haematology outpatient cliniccuh.nhs.ukSource-linked context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
There is nothing physical to recover from. 'Afterwards' is mainly about understanding the plan, waiting for any outstanding results, and knowing what happens next and when.
- Leaving without a final diagnosis while results are awaited
- Some worry during the waiting period
- A bruise where blood was taken
- Being asked to repeat a blood test in a few weeks
- Receiving a clinic letter restating the plan
Aftercare
- Make a note of the plan and any results you are waiting for.
- Check how and when you will get results, and who to contact with questions.
- If seen privately, make sure your NHS GP receives a copy of the letter and any abnormal results.
- Take any newly prescribed medicine as directed and ask about side effects.
- Attend any arranged blood tests or scans on time, as the plan depends on them.
- Keep a copy of your results for your own records.
- Contact the clinic if your symptoms get worse while you wait.
- Keep follow-up appointments even if you feel well, especially for monitoring.
- Previous and recent blood results gathered
- Up-to-date medicines and supplements list
- Timeline of symptoms written down
- Family history of blood problems or clots noted
- Questions written down
- GP details to hand so results can be shared
- Someone to come with you if helpful
⚠ Get urgent help if…
- Heavy or unstoppable bleeding, or sudden widespread bruising
- A new, painful, swollen or red leg, or sudden breathlessness or chest pain (possible clot)
- High fever, especially with a very low white-cell count or feeling very unwell
- Severe drenching night sweats, unexplained weight loss or rapidly enlarging glands
- Fainting, severe breathlessness or chest pain from severe anaemia
- Any symptom your clinician told you to report urgently
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
A good outcome is a clear explanation of your blood result and a plan you understand — which is often reassurance that nothing serious is wrong, or a simple step such as treating low iron. Some results are available at the visit; others, and the final picture, take days to weeks.
A single normal or reassuring result does not always rule everything out, and the haematologist will say whether anything needs watching over time. The consultation is the start of an answer, not always the whole answer.
How long the assessment 'lasts' depends on the problem. A one-off explained result may need no further follow-up, while some conditions are monitored for years with periodic blood counts. Your plan may be reviewed if your symptoms or counts change.
Related tests, treatments or support
A haematology consultation is often combined with blood tests on the day and sometimes with imaging such as an ultrasound or CT, or a bone marrow test, to reach a diagnosis. It may also involve liaison with your GP or other specialists.
Follow-up & long-term care
Follow-up depends on what is found: discharge with advice, a repeat blood test, starting treatment, or a further appointment once results are back. A clinic letter to you and your GP normally explains the plan, and you should be told who to contact and when to expect results.
- Periodic blood counts where a condition is being monitored rather than treated
- Keeping your GP and haematologist informed of new symptoms
- Attending review appointments even when you feel well
Repeat, follow-on and what comes next
- A plan is often provisional and is revised once further results are back.
- Borderline counts may simply be repeated rather than acted on.
- Some conditions are reassessed periodically rather than diagnosed at one visit.
- A second opinion is reasonable if a diagnosis or plan is unclear.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A clear written plan and clinic letter to you and your GP.
- A named contact and a route to ask about results.
- Defined timelines for results and follow-up.
- Clear advice on warning signs that need urgent attention.
- Coordination with the NHS for any treatment or monitoring that should continue there.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The length and complexity of the appointment
- Blood tests taken on the day, and how many
- Any imaging (such as ultrasound or CT) or specialist tests arranged
- Whether a bone marrow test or other procedure is needed
- Follow-up appointments and review of results
- Clinic letters and reports
- Whether care continues privately or is handed back to the NHS
- The consultation fee and how long the appointment is
- Whether blood tests on the day are included or charged separately
- The cost of any likely further tests or scans
- Follow-up appointment costs
- Whether a clinic letter and copies of results are included
- The cancellation policy
- How results will be shared, including with your NHS GP, and what happens if something abnormal is found
On the NHS? Haematology is widely available on the NHS through GP or hospital referral; private appointments are mainly used for speed, choice of specialist or a second opinion.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- No clear explanation of what is being investigated and why.
- No agreed plan for how and when results will be shared.
- Private results not passed to the NHS GP who provides ongoing care.
- Tests arranged without explaining what an abnormal, normal or inconclusive result would mean.
- No discussion of what would count as a reason to seek urgent help.
Marketing red flags
- Promising a definite diagnosis at the first appointment.
- Pushing extensive private blood panels without a clinical reason.
- Implying every abnormal count is dangerous to drive further paid tests.
- No mention of NHS pathways for conditions that clearly need NHS care.
- Not explaining how urgent or serious findings would be handled.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- What does my blood result actually mean, and what are the likely causes?
- What are you trying to rule in or out with any further tests?
- When and how will I get my results, and who do I contact?
- What would count as a reason to seek urgent help while I wait?
- Does anything need treating now, or are we watching and waiting?
- Will my GP receive a copy of the letter and any abnormal results?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my appointment, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this appointment not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Does a haematology referral mean I have cancer?
Will I get a diagnosis at the first appointment?
Will I have a blood test on the day?
Can I see a haematologist on the NHS?
What should I bring?
What is a bone marrow test and will I need one?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: British Society for Haematology — guidelines Cambridge University Hospitals NHS — Your first visit to the haematology outpatient clinic Lab Tests Online UK — Full blood count (FBC) NICE NG12 — Suspected cancer: recognition and referral
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
Related guides: Full blood count review · Anaemia investigation and management · Iron infusion (intravenous iron) · Anticoagulation (blood-thinning treatment) · Bleeding disorder assessment