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Erythrocyte Sedimentation Rate

100
4.7
NABL, ISO
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Overview
Interpreting Results
FAQ's
Erythrocyte Sedimentation Rate

Overview of ESR

What is ESR?

Erythrocyte Sedimentation Rate (ESR) Test, also known as sedimentation rate test or sed rate test is a blood test which can detect inflammatory activity in the body. ESR test doesn’t diagnose one specific condition. Instead, it helps to diagnose or monitor the progress of an inflammatory disease.

Why is ESR done?

The Erythrocyte Sedimentation Rate (ESR) Test is performed:

  • To detect any inflammation in the body which may be caused due to conditions such as infections, cancers, and autoimmune diseases

  • To monitor the progress of inflammatory diseases

  • To evaluate the response to treatment of inflammatory diseases





What does ESR Measure?

The ESR test measures the rate at which red blood cells (erythrocytes) settle (sediment) at the bottom of a tube that contains a blood sample in one hour. The test result is expressed in millimeters per hour (mm/hr).

In the presence of inflammation, certain proteins mainly fibrinogen increase in blood. This high proportion of fibrinogen in the blood causes the red blood cells to form a stack (rouleaux formation) which settle quickly due to their high density.

The ESR test is a non-specific measure of inflammation. An ESR can be affected by conditions other than inflammation also. Although a high ESR can detect the presence of inflammation, it cannot provide any information regarding the cause and site of inflammation. Hence, an ESR test is done along with other tests.

Preparation for ESR

  • No special preparation required

Sample Type for ESR

The sample type collected for Erythrocyte Sedimentation Rate is: Blood

Interpreting ESR results

Interpretations

The normal reference range for Erythrocyte Sedimentation Rate (ESR) is:


Men

0-15 millimetres per hour (mm/hr), or 0-20 mm/hr for men older than 50

Women

0-20 mm/hr, or 0-30 mm/hr for women older than 50

Children

0-10 mm/hr

Newborns

0-2 mm/hr


High ESR can be seen in:


  • Inflammatory disease such as Arthritis (Inflammation of joints), vasculitis (Inflammation of blood vessels)

  • Infection, such as pneumonia, pelvic inflammatory disease, appendicitis, skin infection, bone infection, heart valve infection

  • Autoimmune diseases, such as systemic lupus erythematosus or rheumatoid arthritis

  • Chronic kidney disease

  • Viral infections

  • Pregnancy

  • Cancer, such as lymphoma or multiple myeloma



Low ESR can be seen in:

  • Congestive heart failure

  • Polycythemia

  • Sickle cell disease

  • Severe liver disease

  • Hypofibrinogenemia


Answers to Patient Concerns & Frequently Asked Questions (FAQs) about ESR

Frequently Asked Questions about Erythrocyte Sedimentation Rate

Q. How is this test performed?
This test is performed on a blood sample. A syringe with a fine needle is used to withdraw blood sample from a blood vessel in your arm generally from the inner side of the elbow area. The doctor, nurse or the phlebotomist will tie an elastic band around your arm which will help the blood vessels to swell with blood. This makes it easier to withdraw blood. You may be asked to tightly clench your fist. Once the veins are clearly visible, the area is cleaned with an antiseptic solution and then the needle is inserted into the blood vessel to collect the sample. You may feel a tiny pinprick during the procedure. Blood sample once collected is then sent to the laboratory.
Q. Is there any risk associated with this test?
There is no risk associated with the test. However, since this test involves a needle prick to withdraw the blood sample, in very rare cases, a patient may experience increased bleeding, hematoma formation (blood collection under the skin), bruising or infection at the site of needle prick.
Q. What are the factors which may affect the ESR test results?
The following factors may affect the ESR test results: Pregnancy, anemia, menstrual period, certain medications such as estrogens, birth control pills, aspirin, prednisone etc.
Q. Is there any preparation required before the ESR test?
No special preparation is required for ESR test. However, you should inform the doctor about the medications you are taking as some medications such as estrogens, birth control pills, aspirin, prednisone etc. may affect the test result.
Q. Which is the other test that can be prescribed to detect inflammatory activity?
Your doctor may prescribe C - Reactive protein blood test to detect inflammation.
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Provided By

NABL

ISO

Thyrocare Technologies Limited is India's first and most advanced Totally Automated Laboratory having its strong presence in more than 2000 cities / towns in India and internationally. Thyrocare is India's first fully automated diagnostic laboratory with a focus on providing quality at affordable costs to laboratories and hospitals in India and other countries. Thyrocare operates with a Centralized Processing Laboratory (CPL) in Mumbai - India for esoteric tests; and Regional Processing Laboratory in major metro cities of India and other parts of Asia. We have focus on strong technologies, strong brands and strong systems that enable all laboratories to give their clients the best of science and technology at an affordable cost. With a belief that 'Quality' is the heart of any intelligent management, Thyrocare became one of the first Indian diagnostic laboratories to obtain internationally renowned quality accreditations like ISO 9001-2000 rating as early as 2001, which is now escalated to ISO 9001:2008; NABL (National Accreditation Board for Testing and Calibration Laboratories) in 2005 and CAP (College of American Pathologists) certification in 2007.
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