Understanding your condition can help you advocate for your care, ask informed questions and make more confident decisions about your health.
Living with sickle cell often means navigating complex medical information, blood test results, treatment options and healthcare systems. This section aims to break down that information into practical, understandable guidance that can help you better understand your condition and become a more informed partner in your care.
Sickle cell disease is an inherited blood disorder that affects haemoglobin, the protein inside red blood cells that carries oxygen around the body.
Instead of remaining soft and round, some red blood cells can become rigid and sickle-shaped.
These cells:
- Carry oxygen less effectively
- Break down more quickly
- Can block blood vessels
- Can cause pain and organ damage
Haemoglobin (Hb) is the protein inside red blood cells that carries oxygen around your body.
People living with sickle cell often have lower haemoglobin levels than the general population.
Different types include:
HbA (normal adult haemoglobin)
HbS (sickle haemoglobin)
HbF (fetal haemoglobin)
The balance of these haemoglobin can influence how sickle cell affects an individual.
Low haemoglobin can contribute to:
- Fatigue
- Breathlessness
- Reduced exercise tolerance
- Dizziness
- Reduced energy levels
Questions To Ask
- What is my usual haemoglobin level?
- Has it changed recently?
- What symptoms should I watch for?
Not all sickle cell conditions are the same.
Your genotype (the type of sickle cell you have) can influence your symptoms, treatment options, potential complications and family planning decisions.
Common genotypes include:
HbSS (Sickle Cell Anaemia)
HbSS is often considered the most severe form of sickle cell disease.
People with HbSS may experience:
- More frequent pain crises
- More severe anaemia
- Higher risk of certain complications
- Greater need for ongoing specialist monitoring
However, every person's experience is different.
HbSC
HbSC can sometimes be described as a milder form of sickle cell disease, but this can be misleading.
Many pHospital admissions
- Serious complications
Symptoms and severity vary greatly from person to person.
HbS Beta Thalassaemia
Symptoms can vary depending on the type and severity.
Some people experience symptoms similar to HbSS, while others may have a milder disease course.
Sickle Cell Trait (HbAS)
People with sickle cell trait carry one sickle cell gene and one normal haemoglobin gene.
Most people with sickle cell trait do not have sickle cell disease.
However, knowing your status is important for:
- Family planning
- Genetic counselling
- Understanding inheritance risks
- Certain health considerations
Action Step
If you don't know your genotype, ask your haematology team:
"What is my genotype and what does it mean for me?"
Understanding your genotype can help you make more informed decisions about your healthcare.
Blood tests provide important information about how your body is functioning.
Many people receive blood test results without ever being told what they actually mean.
Understanding some of the key markers can help you have more informed conversations with your healthcare team.
HbS Percentage
HbS is sickle haemoglobin.
This measurement shows how much sickle haemoglobin is present in your blood.
This number can provide useful information but should never be viewed in isolation.
HbF Percentage
HbF (Fetal Haemoglobin) is a type of haemoglobin present before birth.
Higher HbF levels can help reduce sickling and may reduce complications for some people.
Treatments such as hydroxyurea often aim to increase HbF levels.
Reticulocyte Count
Reticulocytes are young red blood cells.
This result can show how hard your bone marrow is working to replace red blood cells that have broken down.
High levels may indicate increased red blood cell destruction.
Ferritin
Ferritin measures iron stores.
This is particularly important because:
- Some people may become iron deficient
- Others may develop iron overload following multiple blood transfusions
One of the most frustrating experiences reported by people living with sickle cell is feeling that their symptoms are dismissed because their blood results appear "normal" or "not severe enough."
The reality is that sickle cell disease is complex.
Two people can have very similar blood results and completely different experiences.
Some people with seemingly favourable blood results may experience:
- Severe pain
- Frequent hospital admissions
- Significant fatigue
- Reduced quality of life
While others with more concerning laboratory results may experience fewer symptoms.
This is because disease severity is influenced by many factors including:
- Genetics
- Organ involvement
- Inflammation
- Infection
- Stress
- Sleep
- Hydration
- Previous complications
- Individual variation
Why This Matters
Blood tests tell part of the story.
They do not measure pain.
They do not measure fatigue.
They do not measure how your condition affects your daily life.
Clinical decisions should consider:
- Blood results
- Medical history
- Previous complications
- Current symptoms
- Functional impact
- Lived experience
Pain is real, even when it cannot be fully explained by a single laboratory result.
A pain crisis occurs when sickled red blood cells obstruct blood flow.
This can reduce oxygen delivery to tissues and organs, leading to severe pain.
Pain can occur anywhere in the body and varies significantly between individuals.
Tracking symptoms can help identify patterns and improve conversations with healthcare professionals.
Consider monitoring:
- Pain episodes
- Fatigue
- Hydration
- Sleep
- Menstrual cycle
- Stress levels
- Hospital admissions
- Triggers
- Medications
The goal is not perfection.
The goal is understanding your baseline so you can recognise changes early and advocate more effectively for your care.
- What genotype do I have?
- What do my blood results mean?
- What is my HbS percentage?
- What is my HbF percentage?
- Am I at higher risk of specific complications?
- How often should my bloods be reviewed?
- What should I monitor between appointments?
- Would a symptom tracker help?
- Should I be taking folic acid?
- Have my vitamin D levels been checked?
Understanding your results can help you become a more informed partner in your own care.