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Erythrocyte Sedimentation Rate (ESR): Normal Values and High Results

The erythrocyte sedimentation rate (ESR) is a blood test used to help detect inflammation and monitor certain diseases. Learn about normal ESR values, the causes of high or low results, and how doctors interpret this test.

Medical tests

C-Reactive Protein (CRP): Normal Levels and What High Results Mean

Pedro Pinheiro, MD

C-reactive protein (CRP) is a marker of inflammation measured through a blood test. Learn what the test is used for, what normal and elevated CRP levels mean, and how doctors interpret the results. We also explain how high-sensitivity CRP (hs-CRP) helps assess cardiovascular risk.

Medical tests