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  2. Serum free light-chain measurement - Wikipedia

    en.wikipedia.org/wiki/Serum_free_light-chain...

    Free light chains (FLCs) are immunoglobulin light chains that are found in the serum (blood) in an unbound (free) state. In recent decades, measuring the amount of free light chains (FLCs) in the blood has become a practical clinical test. FLC tests can be used to diagnose and monitor diseases like multiple myeloma and amyloidosis.

  3. Immunoglobulin light chain - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_light_chain

    Once set, light chain class remains fixed for the life of the B lymphocyte. In a healthy individual, the total kappa-to-lambda ratio is roughly 2:1 in serum (measuring intact whole antibodies) or 1:1.5 if measuring free light chains, with a highly divergent ratio indicative of neoplasm. The free light chain ratio ranges from 0.26 to 1.65. [1]

  4. Reference ranges for blood tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_blood...

    Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...

  5. Nephelometry (medicine) - Wikipedia

    en.wikipedia.org/wiki/Nephelometry_(medicine)

    It is important in quantification of free light chains in diseases such as multiple myeloma. Quantification is important for disease classification and for disease monitoring once a patient has been treated (increased skewing of the ratio between kappa and lambda light chains after a patient has been treated is an indication of disease recurrence).

  6. Multiple myeloma - Wikipedia

    en.wikipedia.org/wiki/Multiple_myeloma

    [70] [79] These biomarkers are >60% clonal plasma cells, a serum involved / uninvolved free light chain ratio ≥ 100 (the concentration of the involved free light chain must be ≥ 100 mg/L) and more than one focal lesion ≥ 5 mm by MRI. [70] [79] Together, these biomarkers and the CRAB criteria are known as myeloma-defining events (MDEs).

  7. Immunofixation - Wikipedia

    en.wikipedia.org/wiki/Immunofixation

    The panel simultaneously tests 4 patients (one in each quadrant). Each patient has 6 electrophoresis panels: The left one is a conventional serum protein electrophoresis. The remainder get solutions with anti-IgG, anti-IgA, anti-IgM, anti-kappa light chain and anti-lambda light chain immunoglobulin, respectively from left to right.

  8. Bence Jones protein - Wikipedia

    en.wikipedia.org/wiki/Bence_Jones_protein

    Bence Jones proteins are present in 2/3 of multiple myeloma cases. [3] The proteins are immunoglobulin light chains (paraproteins) and are produced by neoplastic plasma cells. They can be kappa (most of the time) or lambda. [3] The light chains can be immunoglobulin fragments or single homogeneous immunoglobulins.

  9. AL amyloidosis - Wikipedia

    en.wikipedia.org/wiki/AL_amyloidosis

    AL amyloidosis is caused by the deposition of abnormal antibody free light chains. The abnormal light chains are produced by monoclonal plasma cells, and, although AL amyloidosis can occur without diagnosis of another disorder, it is often associated with other plasma cell disorders, such as multiple myeloma and Waldenström's macroglobulinemia. [6]