ESR 1st Hr. (Westergren Method)
Also known as: Sed Rate
How to prepare
You can eat and drink normally before the test.
No special preparation needed.
Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.
Wear a loose sleeve so the sample can be taken easily from your arm.
How it works
About this test
ESR (Erythrocyte Sedimentation Rate) measures how fast red blood cells settle at the bottom of a tube in one hour. When there is inflammation in the body, proteins in the blood make red cells clump and fall faster, so ESR rises. It is a simple marker of inflammation, not a test for one disease.
Why is this test done?
- Check for inflammation in the body
- Help find the cause of long-lasting fever
- Monitor arthritis, TB and other inflammatory diseases
- Often done together with CBC
Symptoms — when should you get tested?
- Fever lasting many days
- Joint pain and stiffness
- Unexplained weight loss
- Night sweats
- Headache with scalp tenderness (in older people)
Normal range
Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.
If your result is high
A high ESR means there is inflammation somewhere in the body. Your doctor will use other tests to find where.
Common reasons- Infections, including tuberculosis
- Rheumatoid arthritis and autoimmune diseases
- Anaemia
- Pregnancy and older age
- Kidney disease or some cancers
If your result is low
A low ESR is usually not a concern.
Common reasons- Polycythaemia (too many red cells)
- Sickle cell disease
- Very high white cell count
How is the test done?
- 1Book online
Choose your slot for home collection or a visit to our centre.
- 2Blood sample taken
A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.
- 3Tested in our lab
Your barcoded sample is tested on automated machines with strict quality checks.
- 4Report on WhatsApp
A pathologist checks the result and the report reaches you on WhatsApp and email.
Save more with a health package
This test is also included in these checkups along with many other tests.
Frequently asked questions
No fasting is needed for this test. You can eat and drink normally.
Your report is usually ready in same day after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.
Please call our team to confirm whether home sample collection is available for your location and test.
This test needs a blood sample. No special preparation needed.