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Reference Guide
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ESR
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Erythrocyte Sedimentation Rate

What's 
ESR
?
The Erythrocyte Sedimentation Rate (ESR) is a straightforward blood test that checks how quickly your red blood cells (erythrocytes) sink to the bottom of a test tube within an hour. Often called a "sed rate" or "sedimentation rate," this test acts like a general warning signal, giving a wide indication of inflammation or infection in your body. While it doesn't identify the exact location or cause, it's a helpful tool for doctors to detect and keep an eye on various conditions. The ESR test is a great example of how a simple test can provide valuable information about your overall health.
If Your Levels Are High
A high ESR result means that your red blood cells are settling faster than usual, which could be a sign that your body is dealing with some kind of stress, like inflammation or an infection. This might be caused by various factors, such as autoimmune diseases, long-term health conditions, or even just a common cold. Certain medications, like birth control pills or hormone replacement therapy, could also make your ESR levels go up. Keep in mind that this test is like a general alarm, letting us know something might be wrong, but it doesn't tell us exactly what or where the problem is.
Symptoms of High Levels
Symptoms of high levels of ESR are not specific, as this test is a general indicator of inflammation or infection. However, you might experience fatigue, weight loss, or a low-grade fever. Other symptoms could be related to the underlying condition causing the elevated ESR, such as joint pain in case of autoimmune conditions, or cough and congestion if it's due to a respiratory infection.
If Your Levels are Low
A low ESR result might suggest that your body's inflammation response isn't working as it should. This could be due to various reasons, such as taking certain medications like aspirin or ibuprofen, having a high amount of antioxidants in your system, or experiencing conditions that reduce protein levels in your blood, like liver disease or not getting enough nutrients. Another possibility is that your body is making more red blood cells than usual, which can happen if you live at high altitudes or do a lot of intense exercise.
Symptoms of Low Levels
Symptoms of low levels of ESR are typically not noticeable, as this test is a general measure of inflammation and not tied to specific symptoms. However, if the underlying cause is a condition like liver disease or malnutrition, symptoms related to those conditions may be present.

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Erythrocyte Sedimentation Rate

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