ESR Test (Erythrocyte Sedimentation Rate)

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About Our ESR Test (Erythrocyte Sedimentation Rate)

The Erythrocyte Sedimentation Rate (ESR) test is a widely used blood test that helps identify inflammation occurring anywhere in the body. It works by measuring how quickly red blood cells settle to the bottom of a tube over a set period of time. When inflammation is present, certain proteins in the blood cause red blood cells to clump together and fall faster than normal, resulting in an elevated ESR.

Because inflammation plays a role in many acute and chronic conditions, the ESR test serves as an important early indicator of underlying immune or inflammatory activity. While it does not diagnose a specific disease, it provides valuable insight into whether the body is experiencing an inflammatory response that may require further evaluation.

The ESR test has long been used in clinical care to help monitor autoimmune disorders, infections, arthritis, cardiovascular conditions, and other inflammatory diseases. It is especially useful for tracking disease progression over time and assessing how well treatments are working, making it a reliable tool for ongoing health monitoring.

What Is Included In This Test?

This test measures the sedimentation rate of red blood cells in millimeters per hour (mm/hr) to assess inflammatory activity.

Your results can help:

Detect active inflammation in the body
Monitor autoimmune or inflammatory diseases
Track infection severity or response to treatment
Evaluate progression of chronic inflammatory conditions
Support follow-up testing when inflammation is suspected

The ESR test is a nonspecific indicator, meaning elevated results signal inflammation but do not identify its exact cause.

Who Should Consider This Test?

This test is ideal for individuals experiencing symptoms or managing conditions associated with inflammation.

You should consider this test if you:

Have ongoing joint pain, swelling, or stiffness
Experience unexplained fever, fatigue, or weight loss
Have an autoimmune or inflammatory condition requiring monitoring
Are being evaluated for infection or chronic inflammatory disease
Need to track disease activity or treatment effectiveness

Regular ESR testing can help guide care decisions and identify changes in inflammatory status over time.

Convenient, No-Appointment Testing

To complete your test:

Order online through our website
Use the lab locator to find a nearby testing location
Walk in; no appointment required
Access your results securely in your HealthLabs.com account within one to three business days

110% Price Guarantee!

If you find the same test for a lower price from a comparable provider, contact us. We not only match the price, we beat it by an additional 10 percent of the difference.

Common Questions:

How is ESR different from a CRP test?

ESR reflects longer-term inflammation, while CRP rises and falls more quickly in response to acute inflammation.

What symptoms might prompt an ESR test?

Symptoms may include joint pain or swelling, unexplained fever, fatigue, headaches, or unintentional weight loss.

Will anyone see my results besides me?

Your results are stored in your secure online account. They are not shared with anyone else. If you choose, you can print or download them to share with your own doctor.

Do I need to fast before this test?

Fasting is not required for this panel. You can eat and drink normally unless your doctor has given you other instructions.

Can I talk to someone about my results?

Yes. If your results come back abnormal or if you simply have questions, our team is here to support you. You can text our Patient Services team at 1800-579-3914, anytime between 8am and 8pm.

Can I use insurance to pay for this test?

In order to ensure your privacy, we do not bill insurance directly, but you may use HSA or FSA funds. This keeps your results and testing completely private from insurers. We can also provide you with an itemized receipt for insurance reimbursement purposes if you need it.