Last Updated on November 20, 2025 by Ilayda Cengizhan

When someone shows signs of blood, bone marrow, or lymphatic system issues, they see a hematologist. A hematologist is a doctor who deals with diseases affecting these systems. These systems are key to our health. The American College of Physicians says hematology is a part of internal medicine that handles blood disorders.
People with anemia, bleeding problems, or blood cancers like leukemia and lymphoma need a hematologist. These doctors help manage these serious conditions.
Key Takeaways
- A hematologist specializes in the diagnosis and treatment of blood-related disorders.
- Conditions such as anemia, bleeding disorders, and blood cancers are managed by hematologists.
- Hematology is a sub-specialty of internal medicine.
- Referral to a hematologist is often due to abnormal blood work results or suspected blood disorders.
- Hematologists play a critical role in improving outcomes for patients with blood-related conditions.
What Does a Hematologist Do?

Hematologists are doctors who specialize in blood and blood components. They help diagnose and treat blood-related problems. They use tests and treatments like blood transfusions and chemotherapy.
Specialized Focus on Blood, Bone Marrow, and Lymphatic Systems
Hematologists focus on blood, bone marrow, and the lymphatic systems. They check symptoms and blood test results. They also explain these findings to patients.
They manage conditions like anemia, bleeding disorders, and blood cancers. Hematologists provide care that is both detailed and focused on the patient. They keep up with the latest research and advancements in hematology.
Education and Training Requirements
To become a hematologist, one needs a lot of education and training. This includes a residency in internal medicine and advanced training in hematology. This training prepares them to handle complex blood disorders.
- Completion of medical school
- Residency in internal medicine
- Fellowship in hematology
- Certification by a relevant medical board
Difference Between Hematologists and Other Specialists
Hematologists and other specialists like oncologists, may work on similar cases. But hematologists are trained to handle all blood disorders, not just cancers.
Key differences include:
- Hematologists focus on all types of blood disorders, not just cancers.
- Oncologists, while also treating blood cancers, may have a broader focus on cancer in general.
It’s important for patients to know these differences. This helps them get the right care for their conditions.
Common Blood Disorders That Require a Hematologist
Hematologists are key in diagnosing and treating blood disorders that affect millions. They have the skills to handle complex conditions, improving patients’ lives.
Anemia and Related Conditions
Anemia is a blood disorder where there are not enough red blood cells or hemoglobin. Anemia specialists work on different types of anemia. This includes iron-deficiency anemia, vitamin deficiency anemia, and anemia from chronic diseases.
Some specific conditions include:
- Iron-deficiency anemia is often caused by inadequate dietary intake or chronic blood loss.
- Thalassemia is a genetic disorder affecting hemoglobin production.
- Sickle cell anemia is a condition where red blood cells are misshapen and prone to destruction.
It’s important to find the cause of anemia for effective treatment. Hematologists use tests to find the cause and create a treatment plan.
Bleeding and Clotting Disorders
Bleeding and clotting disorders are critical areas for hematologists. Conditions like hemophilia and von Willebrand disease affect clotting. This can lead to prolonged bleeding. On the other hand, some conditions cause excessive clotting, which is dangerous.
Some common bleeding disorders include:
- Hemophilia A and B are genetic conditions that impair clotting factor production.
- Von Willebrand disease affects the blood’s ability to clot.
- Other clotting factor deficiencies can lead to bleeding complications.
Platelet and White Blood Cell Disorders
Hematologists also handle disorders related to platelets and white blood cells. Conditions like thrombocytopenia (low platelet count) and thrombocytosis (high platelet count) need careful monitoring and treatment. Disorders affecting white blood cells, such as neutropenia, can increase infection risk and require specialized care.
Some key aspects of these disorders include:
- Thrombocytopenia which can result from bone marrow failure or immune system disorders.
- Thrombocytosis is often seen in response to inflammation or other underlying conditions.
- Neutropenia is a condition characterized by low levels of neutrophils, a type of white blood cell critical for fighting infections.
In conclusion, hematologists are vital in managing blood disorders. Their expertise helps patients live better lives by understanding and treating these complex conditions.
Blood Cancers and Hematological Malignancies

Blood cancers are a big worry in oncology, making up about 5.4% of all oncology referrals. They need special care from hematologists. Patients with blood cancers often have more symptoms and do worse than those with solid tumors.
Leukemia Types and Symptoms
Leukemia is a blood cancer where bad white blood cells grow too much in the bone marrow. There are several types, like acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), chronic lymphocytic leukemia (CLL), and chronic myeloid leukemia (CML). Symptoms include feeling very tired, losing weight, getting sick often, and bleeding or bruising easily.
Lymphoma Diagnosis and Treatment
Lymphoma is a blood cancer that affects the lymphatic system. It has two main types: Hodgkin lymphoma and non-Hodgkin lymphoma. Doctors usually do a biopsy to diagnose it. Treatment depends on the type and stage of lymphoma and can include chemotherapy, radiation, and targeted therapy.
Multiple Myeloma
Multiple myeloma is a cancer of plasma cells in the bone marrow. It can cause anemia, bone pain, and make infections more likely. Doctors use tests like bone marrow biopsies and blood tests to diagnose it. Treatment may include chemotherapy, corticosteroids, targeted therapy, and stem cell transplants.
Statistical Insights on Blood Cancer Burden
Leukemia, lymphoma, and myeloma are the top blood cancers. They put a big strain on healthcare systems. Hematologists are key in diagnosing and treating these cancers, using various tests and treatments to help patients.
In summary, blood cancers and hematological malignancies need special care from hematologists. Knowing the different types, symptoms, diagnosis, and treatments is key to giving patients the best care.
The Referral Process to a Hematologist
When symptoms suggest a blood disorder, your primary care doctor might send you to a hematologist. This step is key to figuring out and treating blood, bone marrow, and lymphatic system issues. We’ll cover the symptoms that lead to referrals, what happens at your first visit, and the tests used for diagnosis.
Common Symptoms That Prompt Referrals
Doctors send patients to hematologists for certain signs. These signs include:
- Unexplained fatigue or weakness
- Frequent infections
- Easy bruising or bleeding
- Persistent fever
- Swollen lymph nodes
These signs might point to issues like anemia, bleeding disorders, or blood cancers. A hematologist is skilled in diagnosing and treating these problems.
What to Expect During Your First Visit
At your first visit, the hematologist will talk about your symptoms, medical history, and blood test results. They’ll share their findings and might suggest more tests or treatment plans. It’s important to be ready to discuss your symptoms and any questions you have.
Clear communication with your hematologist is key to a smooth process. Feel free to ask questions or clarify any concerns you might have.
Diagnostic Tests and Procedures
To find out what’s wrong, hematologists might run several tests, including:
- Complete Blood Count (CBC)
- Blood smear tests
- Bone marrow biopsy
- Imaging tests like CT or MRI scans
These tests help doctors understand your symptoms and plan the best treatment. We’ll make sure you understand each step of the diagnostic process.
Conclusion: The Growing Demand for Hematology Care
The need for hematologists is increasing. This is because of changes in demographics and better treatments leading to longer lives. Also, more people are living longer, which means more need for specialized care.
Hospitals like Liv Hospital are leading the way in hematology care. They focus on the latest research and care standards. This sets a high bar for the field.
Hematologists are key in finding and treating blood disorders, like blood cancers. As more people live longer, the need for their care will grow. Supporting new treatments and care helps patients get the best results.
The growing need for hematology care shows we must invest more in it. This investment will help meet future healthcare needs. It ensures patients with blood disorders get top-notch care.
FAQ
What is a hematologist?
A hematologist is a doctor who deals with blood-related problems. They treat both simple and serious conditions of the blood, bone marrow, and lymphatic systems.
What conditions do hematologists treat?
Hematologists handle many conditions. These include anemia, bleeding disorders, and blood cancers like leukemia and lymphoma. They also treat other blood and lymph system disorders.
What is the difference between a hematologist and an oncologist?
Hematologists focus on blood cancers and disorders. Oncologists, on the other hand, treat all kinds of cancer. Hematologists often work with oncologists to care for patients with blood cancers.
What are the symptoms that might prompt a referral to a hematologist?
Signs that might lead to a visit to a hematologist include abnormal blood counts and clotting problems. Also, persistent fatigue, unexplained bleeding or bruising, and frequent infections are reasons to see a hematologist.
What can I expect during my first visit to a hematologist?
At your first visit, the hematologist will take your medical history and perform a physical exam. They might also order tests like blood tests or bone marrow biopsies to find out what’s wrong.
What diagnostic tests are commonly used by hematologists?
Hematologists use several tests to diagnose and monitor blood disorders. These include complete blood counts (CBC), blood smears, bone marrow biopsies, and genetic testing.
How do I prepare for a visit to a hematologist?
To get ready for your visit, collect your medical records and list your symptoms and medications. Be prepared to talk about your medical history and any questions or concerns you have.
What is hematology?
Hematology is the study, diagnosis, and treatment of blood-related diseases and disorders.
Why is hematology care important?
Hematology care is vital for managing blood disorders. It helps improve patient outcomes and advances treatment options for blood cancers and bleeding disorders.
References
- “The role of hematologists in a changing United States health care system. (2015). PMC “ PubMed Central. https://pmc.ncbi.nlm.nih.gov/articles/PMC4467883/
- How to Interpret and Pursue an Abnormal Complete Blood Cell Count. (2020). PMC “ PubMed Central. https://pmc.ncbi.nlm.nih.gov/articles/PMC7127472/
- Referrals for Suspected Hematologic Malignancy: A Survey of Primary Care Physicians. (2012). PMC “ PubMed Central. https://pmc.ncbi.nlm.nih.gov/articles/PMC3358503/