Products Description
An erythrocyte sedimentation rate (ESR) test tube is a tall, thin tube used to measure how quickly red blood cells settle at the bottom of the tube.
| Erythrocyte sedimentation rate (ESR) test tube | |
| Purpose | Measures how quickly red blood cells settle to the bottom of a test tube |
| How it works | Inflammation causes red blood cells to clump together, which makes them sink faster |
| What it indicates | A faster ESR rate indicates higher levels of inflammation |
| When it's used | A health care provider may order an ESR if you have symptoms of a condition that causes inflammation |


Erythrocytes are red blood cells. To do an ESR test, a sample of your blood is sent to a lab. A health care professional places the sample in a tall, thin test tube and measures how quickly the red blood cells settle or sink to the bottom of the tube. Normally, red blood cells sink slowly.
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