
Blood draw
Erythrocyte Sedimentation Rate (ESR)
ESR; indication of inflammation.
€ 17,00
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Inflammation and immunity · Blood
How fast red blood cells sink in a tube; an old, slow measure of inflammation, mainly useful in rheumatic diseases.
At a glance
Erythrocyte sedimentation rate
Explanation
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.
Result
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.
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.
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
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.
Who it is 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.
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)
Get tested
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.

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