Screenings if you have thalassemia

The main guidance

The Thalassaemia International Federation (TIF) publishes the main international guidelines. The 5th edition of its guidelines for transfusion-dependent beta thalassemia (TDT) is summarized in a 2025 open-access paper; it says uncontrolled iron overload from transfusions raises the risk of heart failure, hormone (endocrine) damage, liver cirrhosis and liver cancer. (TIF TDT guideline, 2025) The 2021 edition, summarized in 2022, gives check intervals by iron level and covers heart, liver, hormone and bone checks. (TIF TDT guideline, 2021) TIF published a 3rd edition guideline for non-transfusion-dependent beta thalassemia (NTDT) in 2023; its authors describe their approach in a 2023 open-access review. (NTDT review, 2023) A 2025 international consensus covers hormone checks in children and teens with thalassemia. (Endocrine consensus, 2025)

Which group you are in matters for the checks. The 2025 TIF guideline says people who receive six or more red cell units over 6 months, or frequent transfusions for over a year, can be treated as having TDT. (TIF TDT guideline, 2025) The NTDT authors usually count someone as having NTDT if they had fewer than 6 units in the past 6 months and none in the 2 months before. (NTDT review, 2023)

Tests and checks the guidance lists

Check	Looks for	How often	Source
Serum ferritin	Body iron trend	TDT: at least every 3 months. NTDT: trend over time, from age 10	(TIF TDT guideline, 2025)(NTDT review, 2023)
Liver MRI (liver iron concentration)	Iron in the liver	TDT: yearly from age 8 to 10. NTDT: baseline, then every 1 or 2 years	(TIF TDT guideline, 2025)(NTDT review, 2023)
Heart MRI (T2*)	Iron in the heart muscle	TDT: yearly from age 8 to 10. NTDT: not routine	(TIF TDT guideline, 2025)(NTDT review, 2023)
Heart check with echocardiogram	Heart function, pulmonary hypertension	Yearly	(TIF TDT guideline, 2021)(NTDT review, 2023)
Liver ultrasound	Liver cancer	Twice a year (TIF 2021); sources differ	(TIF TDT guideline, 2021)(Liver cancer in thalassemia, 2020)
Bone density (BMD)	Thin bones	Yearly from adolescence (TDT)	(TIF TDT guideline, 2021)
Blood sugar, thyroid, parathyroid and sex hormone tests	Diabetes and hormone problems	Regularly; before age 10 with TDT, from 11 with NTDT	(TIF TDT guideline, 2021)(Endocrine consensus, 2025)

Iron load checks

For TDT, the 2025 TIF guideline says serum ferritin should be measured regularly, at least every 3 months, and liver and heart MRI should be done every year from age 8 to 10 (earlier if possible without sedation), more or less often depending on the iron level. It says heart iron builds up later than liver iron and is rare before age 8 or before 5 years of transfusions, and that a liver iron result cannot replace the heart MRI. (TIF TDT guideline, 2025) The 2021 edition set intervals by result: liver iron every 1 or 2 years when stable at 3 to 7 mg/g, yearly above 7 mg/g; heart MRI every 2 years when T2* is stable above 20 ms, yearly at 10 to 19 ms and every 6 months below 10 ms. (TIF TDT guideline, 2021)

For NTDT, the guideline authors say iron builds up mainly in the liver rather than the heart, and a single ferritin result can underestimate it, though the trend is still useful when liver MRI is not available. They start screening for iron overload from age 10, with a baseline liver MRI repeated every 1 or 2 years (every 6 or 12 months for people on treatment for iron), and say there is not enough evidence for routine heart MRI in NTDT. (NTDT review, 2023) See iron test results and ferritin.

Heart checks

The 2021 TIF guideline says heart checks should be done every year in everyone with thalassemia, whether or not they have heart symptoms, with an echocardiogram screen for pulmonary hypertension as part of the yearly check, and more often (every 3 or 6 months) when heart disease is present. (TIF TDT guideline, 2021) The NTDT authors say people with NTDT should have a yearly echocardiogram that measures the tricuspid regurgitant velocity, a sign of raised lung blood pressure. (NTDT review, 2023) The NHS says some people may need regular monitoring for heart problems. (NHS, treatment)

Liver and liver cancer checks

The 2021 TIF guideline says iron overload and viral hepatitis are the two main causes of liver disease in thalassemia, and that reports show liver cancer has become more common as people live longer. It recommends a liver ultrasound twice a year for all people with thalassemia. (TIF TDT guideline, 2021) A 2020 expert opinion reports liver cancer in about 2 percent of people with thalassemia, often at a younger age than in people without it, and in a notable share without cirrhosis, mainly with NTDT. (Liver cancer in thalassemia, 2020) The NTDT authors say iron build-up in NTDT is linked with a high risk of liver disease and cancer. (NTDT review, 2023) See liver cancer surveillance, hepatitis B test results and hepatitis C test results.

Bone, diabetes and hormone checks

The 2021 TIF guideline says people with TDT should be screened regularly for iron damage including diabetes, an underactive thyroid, underactive parathyroid glands and low sex hormones, especially after age 11 with iron overload, and that a yearly bone density check from adolescence is essential. (TIF TDT guideline, 2021) The 2025 endocrine consensus says regular hormone screening should start before age 10 in transfusion-dependent thalassemia and from age 11 in non-transfusion-dependent thalassemia, since an underactive thyroid, diabetes and underactive parathyroid glands are reported in both. (Endocrine consensus, 2025) The NTDT authors list hypothyroidism, osteoporosis and low sex hormones among the problems linked with iron build-up in NTDT. (NTDT review, 2023) See how often to have a bone density test, A1C and blood sugar test results and thyroid test results.

Diagnosis and carriers

MedlinePlus says a complete blood count shows anemia and a hemoglobin electrophoresis test can detect beta thalassemia; untreated thalassemia major leads to heart failure and liver problems. (MedlinePlus) The NHS says a blood test can be done at any age to check for thalassaemia or the thalassaemia trait, and that screening is offered to all pregnant women in England. (NHS, diagnosis) For carrier testing before or in pregnancy, see genetic carrier screening; for a blood count, see complete blood count results.

When to contact a provider

MedlinePlus, thalassemia, when to contact a medical professional: (MedlinePlus)

Contact your provider if:

You or your child has symptoms of thalassemia.
You are being treated for the disorder and new symptoms develop.

Routine age-based screening

These checks are added to, not instead of, the routine screenings for your age and sex; see screenings by age and gender. For another inherited blood condition with its own check list, see screenings if you have sickle cell disease.

Where they differ:

Liver cancer surveillance. The 2021 TIF guideline recommends a liver ultrasound twice a year for everyone with thalassemia; a 2020 expert opinion says a 6-monthly ultrasound and alpha-fetoprotein schedule has little support from published data and that other centers follow the same rules as for people without thalassemia. (TIF TDT guideline, 2021)(Liver cancer in thalassemia, 2020)
How often MRI is repeated. The 2025 TIF guideline sets yearly liver and heart MRI for TDT, adjusted as needed; the 2021 edition set intervals by result, from every 6 months to every 2 years. (TIF TDT guideline, 2025)(TIF TDT guideline, 2021)
TDT and NTDT. With TDT, heart MRI and 3-monthly ferritin are routine; with NTDT, the guideline authors rely on liver MRI every 1 or 2 years and do not advise routine heart MRI. (TIF TDT guideline, 2025)(NTDT review, 2023)
When hormone checks start. The 2021 TIF guideline stresses checks after age 11 in TDT with iron overload; the 2025 endocrine consensus says before age 10 in transfusion-dependent and from 11 in non-transfusion-dependent thalassemia. (TIF TDT guideline, 2021)(Endocrine consensus, 2025)

Your doctor decides what your result means for you.

Questions people ask

How often is ferritin checked with transfusion-dependent thalassemia?

The 2025 TIF guideline says serum ferritin should be measured in everyone with transfusion-dependent thalassemia at least every 3 months, or more or less often depending on the iron level and changes in treatment. (TIF TDT guideline, 2025)

When do liver and heart MRI scans for iron start?

The 2025 TIF guideline says liver and heart MRI to measure iron should be done every year starting at age 8 to 10, or earlier if it can be done without sedation. It notes heart iron builds up later than liver iron and is rare before age 8. (TIF TDT guideline, 2025)

Is iron checked if I do not need regular transfusions?

Yes. The authors of the 2023 TIF guideline for non-transfusion-dependent thalassemia say they start screening for iron overload from age 10, with a baseline liver MRI repeated every 1 or 2 years. They say a single ferritin result can underestimate iron in this group, but its trend over time is still useful. (NTDT review, 2023)

Is liver cancer screening needed?

The 2021 TIF guideline recommends a liver ultrasound twice a year for all people with thalassemia. An expert opinion from 2020 notes that this schedule has little support from published data and that some centers use the same rules as for people without thalassemia. (TIF TDT guideline, 2021) (Liver cancer in thalassemia, 2020)

Is a thalassemia carrier screened the same way?

No. The NHS says being a beta thalassaemia carrier will not generally cause health problems, though it can cause mild anaemia; the main reason to know is the chance of having a child with thalassaemia if a partner is also a carrier. (NHS)