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IgM assay

Product Method Size Catalog Price Quantity
IgM assay Immunoturbidimetric R1 3 x 20ml IM3834 $1312.72
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  • Format
    Liquid ready to use
  • Working Stability 15-25 °C
  • Working Stability 2-8 °C
    Stable to expiry
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Intended Use

For the quantitative in vitro determination of IgM in serum and plasma. This product is suitable for use on the RX Series instruments which includes the Rx Daytona and Rx Imola.

Clinical Significance

Immunoglobulin M (IgM) is the largest of the five immunoglobulin antibodies and is found in the blood and lymph fluid making up approximately 5-10% of all antibodies.

IgM antibodies are present in the first week following infection; detection of IgM in a patient’s serum therefore indicates recent infection.

IgM is particularly effective in combating bacterial infections because of its high binding affinity for proteins responsible for destroying bacterial cells (complement proteins). IgM measurement can also be used to diagnose and monitor therapy in Waldenström’s macroglobuminemia and plasma cell myeloma, to detect intra-uterine infection by measuring levels in newborn babies, diagnosis of primary biliary cirrhosis, viral hepatitis, rheumatoid arthritis and parasitic infections.


Sample containing human IgM is suitably diluted and then reacted with specific antiserum to form a precipitate which is measured turbidimetrically at 340 nm. By constructing a standard curve from the absorbances of standards, the IgM concentration of sample can be determined.