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Inflammation and immunity · Blood

Erythrocyte sedimentation rate

How fast red blood cells sink in a tube; an old, slow measure of inflammation, mainly useful in rheumatic diseases.

At a glance

  • Measured in blood
  • In 5 test panels
  • No special preparation

Erythrocyte sedimentation rate

  • Explanation
  • Result
  • Reliability
  • Who it is for
  • Test panels
  • Sources

Explanation

Erythrocyte sedimentation rate: what is measured?

The erythrocyte sedimentation rate (ESR, the settling of red blood cells) measures how many millimeters the red blood cells sink in one hour in an upright tube. With inflammation, the body makes more proteins such as fibrinogen and antibodies; these make the red blood cells clump together, so they sink faster. The ESR rises more slowly than CRP, usually only after one to two days, and stays raised for weeks after recovery. The normal value rises with age and is higher in women than in men.

What can it detect?

  • Inflammatory diseases such as rheumatoid arthritis, polymyalgia rheumatica (muscle rheumatism) and giant cell arteritis (inflammation of arteries)
  • Long-lasting infections and inflammations
  • Rarely: a condition with many abnormal antibodies in the blood, such as Kahler's disease (multiple myeloma)

Result

What does the result mean?

Erythrocyte sedimentation rate too high

A raised sedimentation rate points to inflammation, infection or a condition with a lot of protein in the blood, but does not say where it is or what the cause is. A strongly raised value fits inflammatory diseases such as polymyalgia rheumatica or giant cell arteritis and serious infections. Rarely: a blood disease such as Kahler's disease. A slightly raised value is common without disease: in older people, during pregnancy and menstruation, with anemia, overweight and kidney diseases. Symptoms that go with an inflammatory disease are stiffness and pain in the shoulders or hips, new headache with pain when chewing, fever, night sweats or weight loss.

Erythrocyte sedimentation rate too low

A low sedimentation rate is normal and has no meaning. In some conditions the value is extra low, for example with too many red blood cells (polycythemia), with abnormally shaped red blood cells as in sickle cell disease, and with severe heart failure. These causes are found with other tests, not with the ESR itself.

After an abnormal result

The GP assesses the ESR together with CRP, the blood count and the symptoms. A slightly raised value without explanation is usually repeated after a few weeks; with a strongly raised value, targeted tests follow, such as protein tests in the blood, or, if giant cell arteritis is suspected, a prompt referral to the hospital.

Reliability

How reliable is the test?

The ESR is a not very specific inflammation marker: an abnormal value says something is going on, but not what. According to the Dutch Society for Clinical Chemistry (NVKC), CRP is the better test for most inflammations, because CRP responds faster and is less affected by age, sex, pregnancy and anemia. The ESR remains of value in rheumatic diseases such as polymyalgia rheumatica and giant cell arteritis and in conditions with many abnormal antibodies, and is always assessed together with symptoms and other blood results.

What can affect the result?

  • Age, female sex, pregnancy, menstruation, overweight and anemia raise the value without disease; laboratories therefore use age- and sex-specific limits.
  • The ESR only rises after one to two days and stays raised for weeks after recovery; the value lags behind the actual course.
  • An abnormal number or shape of red blood cells (polycythemia, sickle cell disease) lowers the value and can mask inflammation.
  • The result depends on the measurement method; laboratories use different methods and reference values.

Who it is for

Who is the test useful for?

Useful for

Useful when a rheumatic inflammatory disease is suspected, for example with stiffness and pain in the shoulders and hips at an older age or with new headache and pain when chewing over the age of 50, and to follow the course of such a disease. When an acute infection is suspected, CRP is more suitable. In adults without symptoms, routine measurement is not useful: a slightly raised value is then usually harmless and a normal value rules out little.

How common is it?

Polymyalgia rheumatica and giant cell arteritis, the inflammatory diseases for which the ESR is used most, occur almost only in people over 50 and about twice as often in women as in men. A slightly raised sedimentation rate without disease, on the other hand, is very common, especially in older people and women.

Thuisarts.nl (NHG)

Drawbacks and risks

  • A slightly raised ESR without symptoms is usually harmless, but often leads to follow-up tests that find nothing.
  • In older people and women the normal value is higher; using the general limit wrongly shows an abnormality.

Get tested

Erythrocyte sedimentation rate: test panels

Erythrocyte sedimentation rate is part of these test panels. You order online and have your blood drawn at a collection point or collect the sample at home.

  • Erythrocyte Sedimentation Rate (ESR)

    Blood draw

    Erythrocyte Sedimentation Rate (ESR)

    ESR; indication of inflammation.

    € 17,00

  • Comprehensive Blood Test

    Blood draw

    Comprehensive Blood Test

    Comprehensive blood test covering blood count, thyroid, kidney and liver function, glucose, inflammation markers and cholesterol.

    € 215,00

  • Comprehensive Fatigue Test

    Blood draw

    Comprehensive Fatigue Test

    Vitamin D, B12, TSH, fT4, glucose, MCV, ferritin, ESR and complete blood count. For persistent fatigue with inflammation check.

    € 152,00

  • Inflammation Basic

    Blood draw

    Inflammation Basic

    CRP, leukocytes, and ESR. Detects and monitors inflammations, infections, and autoimmune diseases.

    € 78,00

  • Inflammation Extensive

    Blood draw

    Inflammation Extensive

    CRP, leukocytes, ESR, and platelets. Extensive test for diagnosis and monitoring of chronic inflammation and autoimmune diseases.

    € 101,00

Evidence

Sources

This explanation is based on Dutch guidelines and independent information. It is general information, not a diagnosis. Discuss an abnormal result with your GP.

More about risks and results
  • NVKC, allesovertesten.nl: Bloedbezinking (BSE)
  • NVKC, allesovertesten.nl: CRP
  • Thuisarts.nl: Ik heb reuscel-arteriitis (RCA)

More explanations

Other tests: Inflammation and immunity

  • ACE
  • Acetylcholine receptor antibodies
  • ANA screening (antinuclear antibodies)
  • Anti-CCP
  • Antimitochondrial antibodies (AMA)
  • Autoimmune hepatitis antibodies
  • CRP
  • ENA (antibodies against extractable nuclear antigens)
  • hs-CRP
  • IgA (immunoglobulin A)
  • IgG (immunoglobulin G)
  • IgG2
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