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.