what does no apparent monoclonal protein on serum electrophoresis mean

Complete Blood Count (CBC). CBC often reveals a normochromic normocytic anemia. For patients with MGUS and high risk for progression to multiple myeloma, surveillance should be performed at 6 months and then yearly thereafter. Both of the following criteria must be met: In healthy individuals, plasma cellsproduce proteins called polyclonal immunoglobulins. These are a collection of antibodies that protect the body against all kinds of different invading viruses, bacteria or other infectious agents (antigens). Monoclonal gammopathies are associated with a clonal process that is malignant or potentially malignant, including multiple myeloma, Waldenstrms macroglobulinemia, solitary plasmacytoma, smoldering multiple myeloma, monoclonal gammopathy of undetermined significance, plasma cell leukemia, heavy chain disease, and amyloidosis. 11 (2):24. Malnutrition; [updated 2019 Nov 11; cited 2019 Dec 10]; [about 2 screens]. You can learn more about how we ensure our content is accurate and current by reading our. Available from: National Cancer Institute [Internet]. Next-generation sequencing is being done now on a research basis but may soon be used in routine clinical practice. Mayo Clinic does not endorse companies or products. Healthline Media does not provide medical advice, diagnosis, or treatment. Exp Ther Med. The disorder occurs most commonly in older men. what does no apparent monoclonal protein on serum electrophoresis mean. Diseases that produce an increase in the gamma-globulin level include Hodgkins disease, malignant lymphoma, chronic lymphocytic leukemia, granulomatous diseases, connective tissue diseases, liver diseases, multiple myeloma, Waldenstrms macroglobulinemia, and amyloidosis.3,7, Although many conditions can cause an increase in the gamma region, several disease states cause a homogeneous spike-like peak in a focal region of the gamma-globulin zone (Figure 2). 95:2126-33. In myeloma, large amounts of a single antibody are noted as a monoclonal immunoglobulin spike or monoclonal spike (M spike), indicating that the protein came from cells that originally started as single, malignant cell. The method can be used to examine specific proteins in the blood, urine, and other body fluids. Electrophoresis is a method of separating proteins based on their physical properties. Albumin, the major protein component of serum, is produced by the liver under normal physiologic conditions. Inflammatory diseases include. This article provides a comprehensive review of serum protein electrophoresis, including a discussion of how the examination is performed, what it measures, and when it is indicated. All rights reserved. Kaplan JS, Horowitz GL. [Full Text]. Home Decision Support in Medicine LabMed, Monoclonal gammopathy of unknown significance (MGUS), Low concentration of monoclonal immunoglobulins (LCMI). SPEP and UPEP don't measure myeloma cells; they measure the output of myeloma cells. Goldman L, et al., eds. But sometimes it can progress to more-serious diseases, including some forms of blood cancer. In particular, when serum and urine protein electrophoresis results are negative, immunofixation is indicated as a more sensitive test if the clinical suspicion remains high. It measures the amount of two kinds of protein in your body, albumin and globulin. Although this spike is usually greater than 3 g per dL in patients with multiple myeloma, up to one fifth of patients with this tumor may have an M-protein spike of less than 1 g per dL.10 Hypogammaglobulinemia on serum protein electrophoresis occurs in about 10 percent of patients with multiple myeloma who do not have a serum M-protein spike.11 Most of these patients have a large amount of Bence Jones protein (monoclonal free kappa or lambda chain) in their urine.11 Thus, the size of the M-protein spike is not helpful in excluding multiple myeloma. Seiter K, Ponce D. Waldenstrom macroglobulinemia. The LLS mission: Cure leukemia, lymphoma, Hodgkin's disease and myeloma, and improve the quality of life of patients and their families. The Leukemia & Lymphoma Society is a 501(c)(3) organization, and all monetary donations are tax deductible to the fullest extent allowed by tax laws. Proteins are substances made of small chemicals called amino acids. Available from: Systemic Autoinflammatory Disease (SAID) Support [Internet]. Immunoglobulins, known as Igs, are a group of proteins that help protect your body from illness. Further separation of protein subtypes is achieved by staining with an immunologically active agent, which results in immunofluorescence and immunofixation. Instead, they only make light chains. C-reactive protein (CRP) is located in the area between the beta and gamma components.1, Serum protein electrophoresis commonly is performed when multiple myeloma is suspected. Heavy/light chain specific immunoglobulin ratios provides no additional information than serum proteins electrophoresis and immunofixation for the diagnosis and the follow-up of intact immunoglobulin multiple myeloma patients. SPEP is used to help diagnose and monitor a variety of different diseases or disorders that have abnormal proteins or protein levels. [9], In addition, immunofixation can be used to monitor therapy in plasma cell dyscrasias (ie, multiple myeloma and Waldenstrom macroglobulinemia). If there are not CRAB signs and/or symptoms, 60% plasma cells in the bone marrow indicates a diagnosis. A monoclonal protein is produced by the abnormal, cancerous or precancerous cells. A malignant plasma cell is called a . This usually takes less than five minutes. Learn why immunohistochemistry is the gold standard in testing for certain diseases, including several cancers. On the contrary, a persistent monoclonal protein despite treatment is a sign of refractory disease. 24:1121-7. Copyright 2005 by the American Academy of Family Physicians. The examination also should be considered in other red flag situations (Table 1).24, If the examination is normal but multiple myeloma, Waldenstrms macroglobulinemia, primary amyloidosis, or a related disorder still is suspected, immunofixation also should be performed because this technique may be more sensitive in identifying a small monoclonal (M) protein.5. How is a serum sample collected for an immunofixation test? Serum is placed on a specific medium, and a charge is applied. Serum protein electrophoresis (SPEP) and urine protein electrophoresis (UPEP) are tests in which proteins in blood and urine samples are separated so that individual antibodies can be identified and quantified. Blood appears to be a single substance to the naked eye. Factors that increase your risk of developing MGUS include: Each year about 1% of people with MGUS go on to develop certain types of blood cancers or other serious diseases such as: Other complications associated with MGUS include bone fractures, blood clots and kidney problems. When excreted in large amounts, Bence Jones proteins (free light chains) can sometimes make the urine appear foamy and they can cause injury to the kidneys. Common causes of high levels include: Low protein levels may be caused by many conditions. See why Myeloma protein might show up in your blood and what kinds of conditions it might be a sign of. 1 It's called a monoclonal . Murray DL, Puig N, Kristinsson S, et al. Medscape Education, 20022007195-overviewDiseases & Conditions, encoded search term (Immunofixation) and Immunofixation, Fast Five Quiz: Key Aspects of Multiple Myeloma, Fast Five Quiz: Multiple Myeloma Management, Fast Five Quiz: Relapsed/Refractory Multiple Myeloma, From War-Torn Beirut to Myeloma Research in NY, Bispecific Antibody Provides Durable Remission in Myeloma, Pathology of Mantle Cell Lymphoma: Biopsies, Diagnostic Markers, and Options for Clinicians Treating This Disease, CAR T-Cell Therapy for Relapsed/Refractory Multiple Myeloma. High protein levels may be caused by many conditions. Available from: Maine Health [Internet]. UK Myeloma Forum (UKMF) and Nordic Myeloma Study Group (NMSG): guidelines for the investigation of newly detected M-proteins and the management of monoclonal gammopathy of undetermined significance (MGUS). Immunoglobulins are proteins that function as antibodies, which fight infection. If the monoclonal protein level decreases or is undetectable after chemotherapy, it might indicate a response to treatment. Burns also may result in a low albumin level. During the fixation phase, antiserum containing anti-IgG, anti-IgA, anti-IgM, anti-light chain kappa, or anti-light chain lambda is inoculated with the serum proteins. Share cases and questions with Physicians on Medscape consult. Consequently, urine protein electrophoresis is recommended in all patients suspected of having a plasma cell dyscrasia.10. Multiple Myeloma. 1 The term monoclonal gammopathy of undetermined significance (MGUS) was coined by Dr. Robert Kyle in 1978 to describe an asymptomatic plasma cell dyscrasia characterized by a . Affected patients have few bone lesions and few hematologic disturbances. This process is known as electrophoresis. The protein electrophoresis test is often used to find abnormal substances called M proteins. Peripheral blood smear often shows RBCs in a stacked or rouleaux formation. Merck Manual Professional Version. When you arrive, a healthcare professional will simply use a needle to take a blood sample. Genetic changes and environmental triggers appear to play a role. Some of these patients can befollowed with a newer blood test that measures serum free light chains, which are asmall fragment of the larger intact M protein., An intact immunoglobulin (Ig) molecule is composed of two larger pieces (heavy chains) and two smaller pieces (light chains) that are attached to each other. Another test, calledimmunofixation or immunoelectrophoresis, is used to determine the exact type ofabnormal antibody (IgG. The gamma-globulin zone is decreased in hypogammaglobulinemia and agammaglobulinemia. IgA, IgM, and sometimes IgG, along with complement proteins, also can be identified in the beta fraction. Some people may experience a rash or nerve problems, such as numbness or tingling. Ceruloplasmin, alpha2-macroglobulin, and haptoglobin contribute to the alpha2-protein band. If all tests are normal, the pattern of follow-up in Figure 36 can be undertaken. Healthcare providers treat the underlying cause of the immune response to help treat polyclonal gammopathy. [16]. If you have questions about your results, talk to your health care provider. A serum free light chain ratio is indicated in the case of a negative immunofixation result when the suspicion for multiple myeloma is still high. 25th ed. Each plasma cell produces one of five types of antibodies: IgG, IgA, IgM, IgE or IgD, and either kappa or lambda. Available from: Lab Tests Online [Internet]. A monoclonal spike (M spike or paraprotein) on serum protein electrophoresis (SPEP) is a frequent finding in the general population and typically is pathognomonic of an asymptomatic, premalignant condition called monoclonal gammopathy of undetermined significance (MGUS). Instead, its used along with other laboratory tests to provide more information to help with diagnosis. Patients with monoclonal gammopathy of undetermined significance require close follow-up because about 1 percent per year develop multiple myeloma or another malignant monoclonal gammopathy.13 [Evidence level B, prospective cohort study] An algorithm for the follow-up of patients with a monoclonal gammopathy is provided in Figure 3.6. The Licensed Content is the property of and copyrighted by DSM. A small number of patients with myeloma have either "oligosecretory disease," in which the detectable level of monoclonal protein is low, or "nonsecretory disease," in which no monoclonal protein can be detected. The immunoelectrophoresis-serum test is used to. That criteria is determined by a pathologist who reviews the bone marrow aspirate slides. 2010. [10]. BCIT students get their phlebotomy competencies signed off during a two-week placement in Level 1, so whether you collect blood during the long block practicum is very much dependent on the practicum site. A homogeneous immunoglobulin resulting from the proliferation of a single clone of plasma cells that; during electrophoresis of serum, appears as a narrow band or "spike"; it is characterized by heavy chains of a single class and subclass, and light chains of a single type. The net charge (positive or negative) and the size and shape of the protein commonly are used in differentiating various serum proteins.1. Accessed April 18, 2019. Are you a BCIT News insider? Browse the 32 health-related programs and part-time courses available at BCITs School of Health Sciences. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. Definition. URL of this page: https://medlineplus.gov/lab-tests/immunofixation-ife-blood-test/. Leukemia. Fortunately, the cause of an abnormal curve is not always pathologic. [10, 17], A 24-hour concentrated urine sample is appropriate for urine immunofixation. Figure 1 shows a typical normal pattern for the distribution of proteins as determined by serum protein electrophoresis. Moving toward the negative portion of the gel (i.e., the negative electrode), the next peaks involve the alpha1 and alpha2 components. Ramakrishnan N, Jialal I. Bence-Jones Protein. Serum protein electrophoresis is a laboratory examination that commonly is used to identify patients with multiple myeloma and other disorders of serum protein. How is a CSF sample collected for an immunofixation test? 2015 Oct. 47 (6):564-9. The band pattern is specific for certain diseases. We use cookies to enhance your experience. Proteins play many important roles, including providing energy for the body, rebuilding muscles, and supporting the immune system. Reference Range Immunofixation consists of an electrophoresis phase and a fixation phase. When a narrow band with sharp borders can be identified, it implies the presence of a monoclonal protein (see image below). The light chain is also called the Bence Jones protein, named for the doctor Henry Bence Jones who studied its characteristics. This test is most often used to help diagnose or monitor a variety of different conditions. The most common condition linked with these abnormal proteins is MGUS. Your doctor can use it to confirm certain diagnoses. Waldenstrom macroglobulinemia always shows a serum IgM-type monoclonal band. Testing a 24-hour urine sample allows for an accurate measurement of the level of kidney function and can indicate possible kidney damage from myeloma. Alexandria (VA): American Society of Clinical Oncology; 20052019. Your use of this website constitutes acceptance of Haymarket Medias Privacy Policy and Terms & Conditions. One pathologic reason which we covered at BCIT is a monoclonal gammopathy. If present, an excessive production of a monoclonal immunoglobulin may be shown in laboratory test results as a spike on a graph (M spike). In healthy individuals, antibodies produced by plasma cells in the bone marrow help this process. Please login or register first to view this content. It can also detect changes in the ratio of kappa and lambda light chain production, which indicates an excess of abnormal plasma cells. It involves exposing serum placed in a. As denoted in the normal curve above, antibodies are primarily found in the fraction. This website also contains material copyrighted by 3rd parties. The region is sometimes divided into 1 and 2, which would account for a sixth fraction. There are two main types of proteins in the blood: albumin and globulin. Peripheral blood contains more than 20 percent plasma cells. [Internet]. Immunofixation tests can also be done in urine. Serum protein electrophoresis is an inexpensive, easy-to-perform screening procedure for initial identification of monoclonal bands. There may be some slight bruising afterward. Blood Chemistry Tests. Continuing Medical Education (CME/CE) Courses. Thus, it is most often present in the blood but not in the urine. It should be noted that immunoglobulins often can be found throughout the electrophoretic spectrum. Rarely, plasma cells can enter into the circulation and if they represent 20 percent or more of the blood cells, the condition is called plasma cell leukemia. Note that the percent of plasma cells in the bone marrow, assessed by flow cytometry, is not the value used in the diagnostic criteria above. Blood Cancer J. Inflammatory Disease/Inflammation; [cited 2019 Dec 18]; [about 3 screens]. A C-reactive protein test, or CRP test, measures the amount of CRP in your. In most cases in which a monoclonal protein is present, it shows as a narrow band at the IgG lane in combination with a monoclonal band at the kappa or lambda lane. Other more-specific tests, including serum protein electrophoresis (SPEP), can help determine the exact source, such as liver or bone marrow. Enter your information to receive occasional news and important updates! MGUS is usually detected by chance when you have a blood test for another condition. Serum protein electrophoresis (SPEP) is a laboratory technique thats used to determine the levels of some types of proteins in a blood sample. Monoclonal gammopathy of undetermined significance (MGUS) is a condition in which an abnormal protein known as monoclonal protein or M protein is in your blood. Accessed April 18, 2019. The following imaging tests are a very important part of the diagnosis, staging and management of myeloma: If you're diagnosed with myeloma, you may need to undergo more tests during or after treatment to see how themyeloma cells are responding to therapy. Serum protein electrophoresis is the easiest means of excluding the presence of a monoclonal protein and can detect bands of 0.5 gm/dL or less. An apparent monoclonal protein on serum protein electrophoresis may or may not be a true monoclonal protein. Protein Electrophoresis; p. 430. ), New-onset anemia associated with renal failure or insufficiency and bone pain, Back pain in which multiple myeloma is suspected, Hypercalcemia attributed to possible malignancy (e.g., associated weight loss, fatigue, bone pain, abnormal bleeding), Rouleaux formations noted on peripheral blood smear, Renal insufficiency with associated serum protein elevation, Unexplained pathologic fracture or lytic lesion identified on radiograph, Viral infections, especially hepatitis, human immunodeficiency virus infection, mononucleosis, and varicella, M protein appears as a narrow spike in the gamma, beta, or alpha. Platelets Small substances in your blood that help the blood to form a thickened mass (or blood clot) to help stop bleeding. 1998. Gainesville (FL): University of Florida Health; c2021. Rochester (NY): University of Rochester Medical Center; c2019. This causes the different types of proteins to move and group together. Skeletal lesions (e.g., lytic lesions, diffuse osteopenia, vertebral compression fractures) are present in 80 percent of patients. Monoclonal gammopathies are associated with a clonal process that is malignant or potentially malignant. Monoclonal gammopathy of undetermined significance (MGUS) care at Mayo Clinic. When these are removed, a liquid is left behind. The subgroups are: Measuring the proteins in each subgroup can help diagnose a variety of diseases. Serum protein bands (monoclonal gammopathy) will sometimes be found following serum protein electrophoresis in patients presenting with classic signs or symptoms of multiple myeloma, e.g. 2018 Dec 3. Immunofixation consists of an electrophoresis phase and a fixation phase. Suspected multiple myeloma, Waldenstrms macroglobulinemia, primary amyloidosis, or related disorder, Unexplained peripheral neuropathy (not attributed to longstanding diabetes mellitus, toxin exposure, chemotherapy, etc. This sample is often difficult to collect, and suboptimal collection might alter the result. Electrophoresis is a lab technique used to separate groups of proteins in blood serum. Further investigation will usually be needed to make a definitive diagnosis. When screening a patient or establishing a first-time diagnosis for a monoclonal gammopathy, consider ordering DMOGA / Monoclonal Gammopathy, Diagnostic, Serum instead, which includes free light chain analysis. A doctor may use the results to make a diagnosis or decide on a course of treatment. Then it says: "The SPE pattern appears essentially unremarkable. Br J Haematol. This content does not have an Arabic version. Please check with your financial advisor if you have more questions. Eric B Staros, MD Associate Professor of Pathology, St Louis University School of Medicine; Director of Clinical Laboratories, Director of Cytopathology, Department of Pathology, St Louis University Hospital The subsets of these proteins and their relative quantity are the primary focus of the interpretation of serum protein electrophoresis.1,3. Available from: Straub RH, Schradin C. Chronic inflammatory systemic diseases: An evolutionary trade-off between acutely beneficial but chronically harmful programs. There are five types of heavy chains, and each type is represented by a specific letter: IgG, IgA, IgD, IgE and IgM. Monoclonal gammopathy of undetermined significance (MGUS). See permissionsforcopyrightquestions and/or permission requests. The specimen can be serum, urine, or CSF. Blood. Bone marrow examination may be informative. Copyright 2017, 2013 Decision Support in Medicine, LLC. Following my rotation in Anatomical Pathology, I spent one week on accessioning review and another three in Chemistry. https://www.uptodate.com/contents/search. A normal result includes a darker immunoglobulin G (IgG) lane, a lighter immunoglobulin A (IgA), an absent immunoglobulin M (IgM), and a denser kappa compared to lambda lane, with ratio of 2:1. Profile Information: Reflex Test: correct number of peaks and protein values), the analyzer does a pretty good job of identifying each fraction. IFE classifies the monoclonal based on the type of heavy (IgG, IgA or IgM) and light (kappa or lambda) chains that make up the antibodies. Monoclonal gammopathy of undetermined significance (MGUS) (adult). Morrow ES Jr. Allscripts EPSi. Medscape Drugs & Diseases. Among 161 patients in whom both serum and urine demonstrated positive results for monoclonal protein and who were, posttreatment, negative for serum immunofixation, just 3 (1.9%) displayed positive urine immunofixation. [13, 14], Diagnosis of plasma cell dyscrasias Copyright 2023 American Academy of Family Physicians. A total protein test can determine whether you have high blood protein. Other inflammatory conditions of the CNS can present with oligoclonal bands in CSF resulting from intrathecal production of antibodies. We look forward to connecting with you. Ronald Hoffman, Leslie E. Silberstein, Sanford J. Shattil, Bruce Furie, Philip McGlave. Thanks for helping me with this quality post. Monoclonal protein is the output of myeloma cells in most people with myeloma. [20]. How is a urine sample collected for an immunofixation test? Arch Pathol Lab Med. [1] Serum or urine immunofixation negative for a monoclonal protein or a polyclonal pattern is considered to be normal. Electrophoresis describes the migration of charged particles in an electric field, and their subsequent separation based on size and charge. Youve read {{metering-count}} of {{metering-total}} articles this month. Some people experience mild pain when the needle is inserted. In these cases of light chain myeloma, serum test results may not show the characteristic increase of M protein (M spike), but there may be large amounts of monoclonal light chains in the urine. Also, M proteins may not be apparent on electrophoresis. An accurate diagnosis is one of the most important aspects of a persons medical care. High amounts of M protein in a person's blood or urine may be a sign they have multiple myeloma but the presence of M proteins could also indicate other types of plasma cell tumors. When is an immunofixation test indicated? You don't need any special preparations for an immunofixation blood test. 2021 Feb 1. What does "polyclonal light chains detected but no monoclonal immunoglobilin or free light chain (bencejones) is MD presence of free light chain in urine is diagnostic of multiple myeloma.Multiple myeloma is a type of cancer that is caused by malignant plasma cells that proliferate in the bone marrow and produce abnormally high amounts. Kidney or liver disease, a condition involving inflammation, poor nutrition, Disease leading to inflammation (condition may be chronic or acute), Liver disease, congenital emphysema (rare), Kidney disease, disease leading to inflammation (condition may be chronic or acute), Liver disease, poor nutrition, breakdown of red blood cells, Anemia, multiple myeloma, high cholesterol, Rheumatoid arthritis, infection, liver cirrhosis, inflammatory disease, multiple myeloma, lymphoma. Urine immunoelectrophoresis is a lab test that measures immunoglobulins in a urine sample. [Full Text]. 2018 Sep 7. Finally, the sample is washed to remove the proteins that do not precipitate and then stained, destained, and dried. Ferri FF. An additional point to consider is the size of the M-protein spike. Diagnosis requires 10 to 15 percent plasma cell involvement on bone marrow biopsy. [14], Mass spectrometry is sometimes employed in place of immunofixation because of the latters limitations, such as in the detection of low-level disease. Polyclonal gammopathy, also known as hypergammaglobulinemia, is a condition in which white blood cells make too many proteins (antibodies). Medscape Drugs & Diseases. Close more info about Monoclonal Protein on Serum Protein Electrophoresis (M Component), Metabolic Alkalosis: Arterial Blood pH Elevated with Increased Arterial pCO2. Am J Clin Pathol. Subsequent immunofixation with electrophoresis identified the monoclonal protein as an IgG antibody (paraprotein) with a lambda light chain (arrow). (2015, August 21). 1998-2023 Mayo Foundation for Medical Education and Research (MFMER). In: Goldman-Cecil Medicine. Plasma protein levels display reasonably predictable changes in response to acute inflammation, malignancy, trauma, necrosis, infarction, burns, and chemical injury. excess of an abnormal immunoglobulin called monoclonal protein (or M protein). An M-protein spike of greater than 2.5 g per dL should be assessed with a metastatic bone survey that includes a single view of the humeri and femurs.
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