Erythrocyte Sedimentation Rate

Erythrocyte sedimentation rate (ESR) is a blood test that measures how quickly red blood cells settle in a vertical tube over a specified period, providing a nonspecific indicator of inflammation. Inflammatory proteins, particularly fibrinogen, reduce the normal repulsion between erythrocytes and promote rouleaux formation, causing the cells to aggregate and descend more rapidly. Clinicians use ESR alongside symptoms, medical history, and other laboratory findings to assess inflammatory or autoimmune conditions, support disease monitoring, and evaluate treatment response. Because age, anemia, pregnancy, and other factors can influence results, ESR is useful for tracking trends but cannot identify a specific diagnosis alone.

Erythrocyte Sedimentation Rate - Related Videos

Research

JoVE Journal - Medicine

Erythrocyte Sedimentation Rate: A Physics-Driven Characterization in a Medical Context

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Cited by 6 •

2023

Erythrocyte sedimentation rate (ESR) is a physical parameter, often used in routine health checks and medical diagnosis. A theoretical model that allows to extract physically-meaningful parameters from the whole sedimentation curve, based on modern colloidal knowledge, has recently been developed. Here, we present a protocol to automatically collect the ESR over time, and extract the parameters of this recent model from this automated data collection. These refined parameters are also likely to...

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

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Cited by 2 •

2018

This method estimates sediment denitrification rates in sediment cores using the acetylene inhibition technique and microsensor measurements of the accumulated N2O. The protocol describes procedures for collecting the cores, calibrating the sensors, performing the acetylene inhibition, measuring the N2O accumulation, and calculating the denitrification rate.

An Assay for Quantifying Antibody-Mediated Phagocytosis of Parasite-Infected Erythrocytes

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2025

This video demonstrates a flow cytometry-based phagocytosis assay involving labeled and opsonized Plasmodium falciparum-infected erythrocytes by monocytes. Flow cytometry identifies fluorescence in monocytes, confirming the successful identification of opsonized erythrocytes through phagocytosis.

Separation of Spermatogenic Cell Types Using STA-PUT Velocity Sedimentation

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Cited by 111 •

2013

The STA-PUT method allows for the separation of different populations of spermatogenic cells based on size and density.

Education

JoVE Core - Anatomy and Physiology

Lifecycle of Erythrocytes

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2024

Erythrocytes, also known as red blood cells, constantly move through blood capillaries. As a result, they damage their plasma membrane due to the continuous friction. Typically, after 100 to 120 days, erythrocytes become rigid and fragile as they wear out. As they pass through small vessels in the spleen and liver, they can get trapped and break apart into fragments. The resident phagocytic macrophages deal with these damaged cells by engulfing them and separating their globin and heme groups.

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