Erythrocyte Sedimentation Rate Analyzer / ESR (Sed Rate) Analyzers

The erythrocyte sedimentation rate, also known as the ESR or sed rate, is a clinical lab test that measures the rate at which red blood cells in whole blood descend into a standardized tube, reported as mm per hour. This test is used to measure inflammation as inflamed red blood cells settle quickly relative to normal blood cells. Thus, a high ESR can be indicative of elevated inflammation, though other conditions such as anemia, renal failure, and obesity can increase ESR rate as well.

A method for ESR testing was developed some time ago, but today it is standard to perform this test on an automated analyzer. These analyzers speed run time, while enhancing safety and accuracy. The standard technique for ESR testing is called the Westergren Method in which whole blood is mixed with sodium citrate or EDTA as an anticoagulant and then added to a standardized calibrated tube, which is allowed to sit for one hour. Sedimentation rate is measured by recording the number of millimeters between the top of the sedimented red blood cells and the zero mark of the tube. Many analyzers operate using the Westergren Method, though instruments employing alternative methods have begun to emerge. Other features to pay attention to when selecting an ESR analyzer include its capacity, run time, throughput, dimensions, and sample tracking features.

Find, compare, and request a quote for ESR (Sed Rate) analyzers across leading suppliers at Labcompare; including access to product citations, related published figures, and first-hand reviews from our scientific community.