ESR Level in Cancer Patients: Normal Range, Causes, Diagnosis & Treatment

Introduction

Do you see an elevated ESR (erythrocyte sedimentation rate) in your blood test report, and do you worry that maybe it could be cancer? Elevated ESR might make you feel worried; however, having high ESR is not always a sign of cancer. ESR is a test that shows the presence of inflammation in the body, and it can be high due to infections, autoimmune diseases, anaemia, and some forms of cancer¹. 

In this article we will discuss the normal ESR levels, how they change in cancer patients and their role ESR in cancer management. We will also check what else can cause a high ESR and situations where you need to consult your physician. 

What is ESR (Erythrocyte Sedimentation Rate)?

The ESR test is a blood test that measures how quickly red blood cells settle at the bottom of a tube in one hour. During inflammation, certain proteins in the blood make red blood cells stick together in stacks. This causes them to settle faster, resulting in a higher ESR. 

Main things to know about ESR

• Evidence of Inflammation: ESR could rise to indicate the presence of inflammation somewhere in the body, but it cannot tell where it is and what causes it¹.  
• Not a specific test for cancer: ESR could be elevated in some cancers but may also rise due to infections, autoimmune disease, anaemia and other problems. Hence, ESR alone cannot be used to confirm cancer². 
• Values are reported as mm/hr: The ESR test shows the number of millimetres that the red blood cells settled within an hour³. 
• Several conditions can affect ESR: Age, gender, pregnancy, anaemia and some drugs or diseases can affect the ESR results. Hence, ESR results must be evaluated with other symptoms and tests³. 

Normal ESR Range

There is no single normal ESR range that applies to everyone. ESR values can vary depending on age, sex, pregnancy, anaemia, and the laboratory method used. Therefore, your result should be compared with the reference range provided by the laboratory on your report. 

For adults, commonly used reference ranges with the Westergren method are³:

• Men younger than 50 years old: less than 15 mm/hour 
• Men older than 50 years old: less than 20 mm/hour 
• Women younger than 50 years old: less than 20 mm/hour 
• Women older than 50 years old: less than 30 mm/hour 

Important points to note:  

• For children, ESR varies with age, so there is no single cut-off that applies to all children. Newborns and older children may have different normal values. It is best to use the age-specific reference range provided by the laboratory. 
• ESR also tends to increase with age and may be slightly higher in women. A doctor interprets the result along with your symptoms and other test results^1,3.  
• ESR reference ranges can vary between laboratories and may be influenced by factors such as age and sex. A result outside the usual range does not necessarily indicate a health problem, so your ESR result should always be interpreted alongside your symptoms and other test results by a doctor³. 

ESR Level in Cancer Patients?

The relationship between ESR and cancer is non-specific. Elevated ESR levels may be seen in patients with some types of malignancies and in some cases, it may be associated with more advanced disease^3,4. However, a normal ESR also does not completely exclude cancer.  

ESR is a non-specific marker of inflammation and cannot be used alone to diagnose cancer. Increased ESR can also occur due to infections, autoimmune disorders, anaemia and other inflammatory conditions. Therefore, an abnormal ESR result should be interpreted together with the patient’s symptoms, medical history and other diagnostic investigations. 

Note: ESR alone cannot be used to diagnose cancer, as it is an inflammatory marker rather than a cancer-specific test. Therefore, there is no single ESR Level for cancer that can independently confirm cancer diagnosis. 

Reasons for High ESR Levels in Cancer Patients

In a person with cancer, a high ESR may be caused by the cancer itself or by other conditions occurring alongside cancer. 

The possible causes of elevated ESR in cancer patients include^3,4:

• Cancer-related inflammation: Certain cancers can trigger an inflammatory response, increasing the concentration of plasma proteins such as fibrinogen and globulins. These proteins promote rouleaux formation and faster red-cell sedimentation, thereby increasing the ESR. 
• Anaemia: Anaemia may increase ESR. This is because a lower concentration of red blood cells may change how quickly they settle in the blood sample. 
• Infections: Infections can increase ESR. People with cancer may be more prone to infections, possibly due to immunosuppression or due to certain cancers treatments such chemotherapy, or transplantation, which can weaken the immune system. 
• Concurrent medical conditions: Other underlying medical conditions such as autoimmune, inflammatory or kidney diseases that may coexist with cancer can contribute to the elevated ESR result. 

ESR Levels in Different Types of Cancer

Various cancers have been associated with high ESR values through studies; however, these should not be considered as diagnostic values, since ESR values depend on the individual, type of cancer, stages of cancer and other illnesses that may be present. 

Most commonly, high ESR levels are reported in some types of blood cancers. Cancers like Multiple Myeloma produce massive amounts of abnormal antibodies or proteins that can greatly increase red blood cell sticking together, leading to very high ESR levels. A reading above 100 mm/hour indicates a highly elevated value which may be seen in multiple myeloma, lymphoma or metastatic cancer (cancer that has spread to distant organs)^3,5.  

Note: An increased ESR does not indicate the presence of cancer. Age, sex, anaemia and other medical conditions may alter the ESR value in individuals; hence the value must always be interpreted considering other findings and symptoms of the patient. 

How Is ESR Used in Cancer Diagnosis?

Some of the ways ESR may be relevant in the evaluation and management of patients with cancer are discussed below^1,4:

• As a general health assessment method: When examining symptoms in a patient, a doctor might consider the results of ESR test, among other methods. If ESR is found to be elevated, doctors might order further tests to establish the root cause. 
• As a recommendation for further investigation: As certain types of cancers can cause severe inflammation, elevated ESR in the absence of other possible causes, may suggest further testing need guided by the patient’s history, examination and associated abnormalities. Based on these factors, the doctors might perform imaging tests, biopsy, and/or other types of blood tests to check for the presence of cancer.  
• For the monitoring of certain conditions: ESR may be used along with other tests to monitor inflammation and changes in some conditions associated/co-existing with cancer. However, ESR is not used alone to diagnose cancer or determine its progression.  

Note that the ESR test is not specific for cancer and cannot detect any kind of cancer by itself. Rather, it can be used as part of a general health assessment to identify inflammatory activity in the body and determine if further testing is necessary. Discuss the results of your ESR test with your doctor. 

ESR Changes During Cancer Treatment

Changes in ESR may provide additional information about inflammation and disease activity in some people with cancer. It may have the following role: 

• Provide prognostic information in selected cancers: A persistently high ESR may be linked to poorer outcomes in certain cancers. However, ESR is non-specific and should not be used alone to predict a person’s prognosis^3,4,5.   
• Monitoring inflammation during cancer treatment: A decrease in ESR may indicate that tumour-related inflammation has reduced. But it may also change because of infections, anaemia, autoimmune conditions, or treatment-related factors^3,4. Therefore, doctors usually rely more on imaging and cancer-specific tests to assess how well treatment is working.  

Hence, ESR may be used as an additional laboratory finding, along with clinical assessment, imaging and other in some cancers, but it is not routinely used to monitor cancer progression or treatment response. 

Warning Signs of High ESR Levels

There are no specific symptoms associated with a high ESR test result on its own. It is usually an indicator of an underlying medical condition. Since ESR results are non-specific, the symptoms that are associated with it may be more significant for determining what is causing it. 

The following symptoms, if accompanied by a high ESR result, may indicate that further investigation is necessary^6,7:

• Fever without a known cause 
• Unexplained or unexplained weight loss or lack of appetite 
• Unexplained tiredness 
• A lump, growth or swelling anywhere in the body 
• Persistent and unusual pain in a specific area  
• Unusual bruising or bleeding 

These symptoms do not always mean cancer. They may be due to many other conditions¹. 

Also Read: What Level of Eosinophils Indicates Cancer?

When to Consult a doctor?

Discuss your ESR result with your doctor if: 

• Your ESR is high or remains elevated on repeat testing. 
• You have symptoms such as unexplained weight loss, persistent fever, night sweats, or unusual pain. 
• Your symptoms are persistent or worsening despite treatment. 
• You have other abnormal blood test results, or your doctor is concerned about an underlying condition. 

A high ESR does not indicate cancer on its own. Your doctor may recommend further tests to identify the underlying cause based on your symptoms, medical history and other test results¹.

Conclusion

Although a high ESR can be worrying, it does not necessarily mean cancer. High ESR levels can occur due to infections, inflammation, anaemia and other health conditions, as well as some cancers. In cancer, ESR may provide additional information about inflammation and, in some types of cancer, may have prognostic value. However, ESR cannot diagnose cancer or determine its stage or severity on its own. Doctors interpret ESR results along with other tests, symptoms and clinical findings. If your ESR remains high or you have ongoing symptoms that concern you, it is best to consult your doctor. 

Frequently Asked Questions (FAQs)

References

1. Erythrocyte Sedimentation Rate (ESR): MedlinePlus Medical Test. Accessed September 6, 2026. https://medlineplus.gov/lab-tests/erythrocyte-sedimentation-rate-esr/ 

2. Tests and Procedures Used to Diagnose Cancer – NCI. March 9, 2015. Accessed September 7, 2026. https://www.cancer.gov/about-cancer/diagnosis-staging/diagnosis 

3. Tishkowski K, Zubair M. Erythrocyte Sedimentation Rate. In: StatPearls. StatPearls Publishing; 2026. Accessed September 7, 2026. http://www.ncbi.nlm.nih.gov/books/NBK557485/ 

4. Abdollahi O, Vosoughi T, Talebi A, Karimpourian H, Rastegar M, Farhadi E. Investigation of ESR Values in the Diagnosis of Malignancies: A Cross‐Sectional Study. Health Sci Rep. 2025;8(9):e71208. doi:10.1002/hsr2.71208 https://pubmed.ncbi.nlm.nih.gov/40918030/

5. Jette B. Kornum, Dóra K. Farkas, Claus Sværke, Marianne T. Severinsen, Reimar W. Thomsen, Henrik T. Sørensen; Cancer Risk and Prognosis after a Hospital Contact for an Elevated Erythrocyte Sedimentation Rate. Cancer Epidemiol Biomarkers Prev 1 January 2019; 28 (1): 225–232. https://aacrjournals.org/cebp/article/28/1/225/71639/Cancer-Risk-and-Prognosis-after-a-Hospital-Contact

6. ESR: MedlinePlus Medical Encyclopedia. Accessed September 7, 2026. https://medlineplus.gov/ency/article/003638.htm 

7. Cancer. nhs.uk. May 30, 2025. Accessed September 7, 2026. https://www.nhs.uk/conditions/cancer/ 

8. Australia H. Erythrocyte sedimentation rate (ESR) blood test explained. July 7, 2025. Accessed September 7, 2026. https://www.healthdirect.gov.au/erythrocyte-sedimentation-rate-ESR-test 

9. CDC. Cancer Screening Tests. Cancer. February 6, 2025. Accessed September 7, 2026. https://www.cdc.gov/cancer/prevention/screening.html 

10. Bień E, Balcerska A. [Clinical significance of erythrocyte sedimentation rate, C-reactive protein and serum lactate dehydrogenase levels in the diagnosis, prognosis and treatment monitoring of children suffering from cancer]. Med Wieku Rozwoj. 2004;8(4 Pt 2):1081-1089.  https://pubmed.ncbi.nlm.nih.gov/15951603/

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