Sickle cell screening — Patient information · Ruqelo Health
Diagnostics·Diagnostics
Sickle cell screening
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Educational summary — not medical advice. Discuss with your healthcare provider.
Informed by recognized medical guidance
Overview
Sickle cell screening is a simple blood test that checks if you carry the gene for sickle cell disease or if you have the disease itself. Sickle cell disease is a genetic condition that affects the shape of red blood cells, causing them to become stiff and sickle-shaped. This can lead to blockages in blood flow, pain, and other health problems.
Key facts
Sickle cell disease is inherited, meaning it is passed from parents to children through genes.
Screening can identify if you are a carrier (have the sickle cell trait) without having the disease.
Newborn screening for sickle cell disease is routine in many countries and helps start treatment early.
Questions about this article
Screening is also offered to adults who are planning a pregnancy or have a family history of the condition.
Sickle cell disease is most common in people of African, Caribbean, Mediterranean, Middle Eastern, and Indian ancestry. In the UK, about 1 in 2,000 babies is born with sickle cell disease, and many more carry the trait.
Sickle cell screening is offered to all newborns in many countries, and to adults who have a family history of sickle cell disease or who belong to an ethnic group where the condition is more common. It can also be done as part of prenatal testing.
Symptoms
Call emergency services immediately if you notice:
Sudden, severe pain that does not go away with home care
Trouble breathing or chest pain
Sudden weakness or numbness on one side of the body (signs of a stroke)
Very high fever (over 38.5°C / 101.3°F) or chills
Unusual sleepiness or confusion
See a doctor urgently (same day) if you notice:
⚠Pain that is getting worse despite using pain relief measures
⚠Any new swelling in the hands, feet, or joints
⚠Persistent headache or vision changes
⚠Dark urine without a clear cause
Common symptoms
People with sickle cell disease often have anemia (low red blood cells), which can cause tiredness and pale skin.
Episodes of severe pain, called sickle cell crises, can happen suddenly and affect the chest, arms, legs, or back.
Infections are more common because the spleen may not work properly.
Jaundice (yellowing of the skin and eyes) due to red blood cells breaking down quickly.
Symptoms in children
Newborns with sickle cell disease may have anemia and be more prone to infections.
Painful swelling of the hands and feet (dactylitis) is common in babies and young children.
Delayed growth or development can occur due to chronic anemia.
Symptoms in older adults
Older adults with sickle cell disease may have ongoing pain and damage to organs like the kidneys, lungs, or heart.
Chronic leg ulcers (sores on the lower legs) can develop.
Increased risk of strokes or vision problems due to blocked blood vessels.
Causes
Main causes
Sickle cell disease is caused by a change (mutation) in the gene that tells the body to make hemoglobin – the part of red blood cells that carries oxygen.
The condition is inherited in an autosomal recessive pattern: a child must receive a sickle cell gene from both parents to have the disease. If they get one sickle cell gene, they have the trait (carrier) and usually have no symptoms.
Risk factors
Having a family history of sickle cell disease or trait.
Being of African, Caribbean, Mediterranean, Middle Eastern, or Indian ancestry.
If both parents are carriers (have sickle cell trait), each pregnancy has a 1 in 4 chance of a child with sickle cell disease.
When to see a doctor
See a doctor urgently if:
If you or your child have any emergency symptoms listed above, call your local emergency number immediately.
Book a routine appointment if:
If you know you are a carrier or have a family history of sickle cell disease, talk to your doctor about screening before planning a pregnancy.
Pregnant women from high-risk backgrounds are often offered screening as part of routine prenatal care.
If you have symptoms like unexplained pain, frequent infections, or anemia, discuss testing with your doctor.
Sickle cell screening is a simple blood test that can give you important information about your health and your baby's health. Most people who are carriers have no symptoms and can live a normal life. Knowing your status helps you make informed decisions about family planning and medical care.
Diagnosis
Sickle cell screening is usually done with a blood test. A small sample of blood is taken from a vein in your arm (or a heel prick in newborns) and sent to a lab to check for the abnormal hemoglobin.
Tests that may be done
Blood test for hemoglobin electrophoresis (separates and measures different types of hemoglobin)
Newborn screening heel-prick test (done shortly after birth)
Prenatal screening via chorionic villus sampling or amniocentesis if parents are known carriers
What to expect at your appointment
The blood test takes just a few minutes. You do not need to prepare in any special way. Results may take a few days to a week. Your doctor will explain what the results mean and what follow-up is needed. If you are a carrier, you may be offered genetic counseling to discuss the implications for family planning.
Treatment
There is no routine treatment for sickle cell trait (carriers) because it usually causes no health problems. For people with sickle cell disease, treatment focuses on managing symptoms, preventing complications, and improving quality of life. Early diagnosis through screening allows for early care.
Self-care at home
Drink plenty of water to stay hydrated, as dehydration can trigger a crisis.
Avoid extreme temperatures (very hot or cold), which can also trigger pain episodes.
Get enough rest and listen to your body when you feel tired.
Wash hands often and avoid infections by keeping vaccinations up to date.
Medical treatments
Treatment for sickle cell disease may include pain relief during crises, antibiotics to prevent infections (especially in children), and folic acid supplements to help the body make healthy red blood cells. Doctors may also recommend hydroxycarbamide (also called hydroxyurea) – a medicine that reduces the frequency of pain crises, but it should only be taken under medical supervision. Blood transfusions may be used for severe anemia or to prevent stroke. Newer therapies like gene therapy are being studied but are not yet widely available.
When is surgery considered?
In some cases, surgery may be needed to remove the spleen if it is enlarged or damaged, or to treat hip problems (avascular necrosis). A bone marrow transplant can potentially cure sickle cell disease, but it is a major procedure with serious risks and is not suitable for everyone. Your doctor will discuss if any surgery is right for you.
Living with this condition
If you have sickle cell trait, you can live a normal life without any special care. If you have sickle cell disease, daily life involves managing pain and preventing triggers. Many people with sickle cell disease live active lives with good medical support and lifestyle adjustments.
Lifestyle tips
Learn to recognize early signs of a pain crisis so you can take action quickly.
Keep warm in cold weather and avoid getting too hot in summer.
Avoid strenuous physical activities that cause exhaustion, but gentle exercise like walking or swimming is fine.
Try to avoid stress, as it can trigger crises.
Diet and exercise
Eat a balanced diet rich in fruits, vegetables, whole grains, and lean protein. Stay well-hydrated – aim for at least 8 glasses of water a day if you are prone to crises. Gentle exercise like walking, stretching, or yoga can help maintain strength without overexertion. Avoid high-altitude activities like mountain climbing or scuba diving, as low oxygen can trigger a crisis.
Mental health and emotional wellbeing
Living with a chronic condition like sickle cell disease can be stressful and may lead to anxiety or depression. It is normal to feel frustrated or worried about your health. Talking to a counsellor or joining a support group can help. Let your healthcare team know if you are struggling emotionally – they can provide resources.
Prevention
Sickle cell disease itself cannot be prevented because it is a genetic condition. However, screening can help prevent complications by identifying the condition early. If you are a carrier, genetic counseling can help you understand the chances of having a child with sickle cell disease and discuss options like prenatal testing or pre-implantation genetic diagnosis.
Vaccines
Vaccines are very important for people with sickle cell disease because they are more prone to infections. Make sure to receive all routine childhood vaccines, plus the pneumococcal vaccine, influenza (flu) vaccine each year, and meningococcal vaccines as recommended by your doctor.
Screening programmes
Screening is the key to early detection. Newborn screening is already routine in many countries. Adults who are planning a pregnancy or have risk factors should ask their doctor about screening. Prenatal screening (during pregnancy) can tell if a baby has sickle cell disease or is a carrier.
Complications
If left untreated
Frequent and severe pain crises that can lead to hospitalization.
Increased risk of serious infections, including pneumonia and meningitis.
Damage to organs over time, such as the lungs, kidneys, liver, and heart.
Stroke, especially in children with sickle cell disease.
Vision loss due to blockage of blood vessels in the eye.
Chronic leg ulcers that are slow to heal.
Long-term outlook
With early diagnosis through screening and good medical care, most people with sickle cell disease can live a full and productive life. Treatments and lifestyle changes help manage symptoms and reduce the risk of complications. Many people with sickle cell disease lead happy lives, have families, and pursue their goals. The outlook is much better today than it was in the past, thanks to advances in care.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 8, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
