BIOMAT Database Logo BIOMAT Database Logo

Evaluation of IgM LAT and IgM ELISA as compared to microscopic agglutination test (MAT) for early diagnosis of Leptospira sp. 2019

N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Programme of Biomedical Science, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.

Leptospirosis is a worldwide zoonotic disease caused by spirochetes of the genus Leptospira. The clinical manifestation of leptospirosis is non-specific and frequently misdiagnosed as other illnesses. The aim of this study was to compare the diagnostic accuracies of two commercial tests for early diagnosis of Leptospira species: the IgM latex agglutination test (IgM LAT) and the IgM enzyme-linked immunosorbent assay (IgM ELISA). A total of 140 serum samples were obtained from patients suspected of leptospirosis at the Universiti Kebangsaan Malaysia Medical Centre (UKMMC). These serum samples were tested for the presence of Leptospira sp. using IgM LAT, IgM ELISA and MAT. From Table 1, IgM LAT showed 21% (n = 29) positive, 18% (n = 25) inconclusive and 61% (n = 86) negative, while IgM ELISA showed 6% (n = 8) positive, 6% (n = 8) inconclusive, 88% (n = 124) negative and MAT showed 11% (n = 16) positive, 47% (n = 65) inconclusive, 42% (n = 59) negative. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of IgM LAT were 68.8%, 57.6%, 30.6% and 87.2% respectively, while for IgM ELISA they were 37.5%, 89.8%, 50% and 84.1%, respectively as compared to MAT (Table 2). The results showed that IgM LAT had higher sensitivity but lower specificity compared to IgM ELISA. In conclusion, IgM LAT can be useful as an early screening test for early diagnosis of Leptospira sp., while IgM ELISA is a suitable method for reducing false negative detection of Leptospira sp. As both tests show moderate percentages (~65%) in accuracy, an additional test is required for better detection of Leptospira sp.

UI MeSH Term Description Entries
D007075 Immunoglobulin M A class of immunoglobulin bearing mu chains (IMMUNOGLOBULIN MU-CHAINS). IgM can fix COMPLEMENT. The name comes from its high molecular weight and originally was called a macroglobulin. Gamma Globulin, 19S,IgM,IgM Antibody,IgM1,IgM2,19S Gamma Globulin,Antibody, IgM
D007922 Leptospirosis Infections with bacteria of the genus LEPTOSPIRA. Cane-Cutter Fever,Canicola Fever,Leptospira Canicola Infection,Leptospira Infection,Leptospirosis Canicola,Mud Fever,Rice-Field Fever,Stuttgart Disease,Swineherd's Disease,Cane Cutter Fever,Fever, Canicola,Fever, Mud,Fever, Rice-Field,Fevers, Cane-Cutter,Infection, Leptospira,Infection, Leptospira Canicola,Infections, Leptospira,Infections, Leptospira Canicola,Leptospira Canicola Infections,Leptospira Infections,Leptospiroses,Leptospirosis Canicolas,Rice Field Fever,Swineherd's Diseases
D008296 Malaysia A parliamentary democracy with a constitutional monarch in southeast Asia, consisting of 11 states (West Malaysia) on the Malay Peninsula and two states (East Malaysia) on the island of BORNEO. It is also called the Federation of Malaysia. Its capital is Kuala Lumpur. Before 1963 it was the Union of Malaya. It reorganized in 1948 as the Federation of Malaya, becoming independent from British Malaya in 1957 and becoming Malaysia in 1963 as a federation of Malaya, Sabah, Sarawak, and Singapore (which seceded in 1965). The form Malay- probably derives from the Tamil malay, mountain, with reference to its geography. (From Webster's New Geographical Dictionary, 1988, p715 & Room, Brewer's Dictionary of Names, 1992, p329) Federation of Malaya,Malay Federation,Malay Peninsula,Malaya,Malaya Federation,Sabah,Sarawak
D011237 Predictive Value of Tests In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test. Negative Predictive Value,Positive Predictive Value,Predictive Value Of Test,Predictive Values Of Tests,Negative Predictive Values,Positive Predictive Values,Predictive Value, Negative,Predictive Value, Positive
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000372 Agglutination Tests Tests that are dependent on the clumping of cells, microorganisms, or particles when mixed with specific antiserum. (From Stedman, 26th ed) Agglutination Test,Test, Agglutination,Tests, Agglutination
D000907 Antibodies, Bacterial Immunoglobulins produced in a response to BACTERIAL ANTIGENS. Bacterial Antibodies
D012680 Sensitivity and Specificity Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed) Specificity,Sensitivity,Specificity and Sensitivity
D042241 Early Diagnosis Methods to determine in patients the nature of a disease or disorder at its early stage of progression. Generally, early diagnosis improves PROGNOSIS and TREATMENT OUTCOME. Early Detection of Disease,Diagnosis, Early,Disease Early Detection

Related Publications

N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Comparison of a slide agglutination test, LeptoTek Dri-Dot, and IgM-ELISA with microscopic agglutination test for Leptospira antibody detection.
November 2007, The Southeast Asian journal of tropical medicine and public health,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Diagnosis of Leptospirosis: Comparison between Microscopic Agglutination Test, IgM-ELISA and IgM Rapid Immunochromatography Test.
January 2015, PloS one,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Assessment of the efficacy of an IgM-elisa and microscopic agglutination test (MAT) in the diagnosis of acute leptospirosis.
November 1999, The American journal of tropical medicine and hygiene,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Comparison of an in-house latex agglutination test with IgM ELISA and MAT in the diagnosis of leptospirosis.
January 2010, Indian journal of medical microbiology,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Diagnosis of Human Leptospirosis: Comparison of Microscopic Agglutination Test with Recombinant LigA/B Antigen-Based In-House IgM Dot ELISA Dipstick Test and Latex Agglutination Test Using Bayesian Latent Class Model and MAT as Gold Standard.
June 2022, Diagnostics (Basel, Switzerland),
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Diagnosis of human leptospirosis: systematic review and meta-analysis of the diagnostic accuracy of the Leptospira microscopic agglutination test, PCR targeting Lfb1, and IgM ELISA to Leptospira fainei serovar Hurstbridge.
February 2024, BMC infectious diseases,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
The microscopic agglutination test (MAT) is an unreliable predictor of infecting Leptospira serovar in Thailand.
October 2009, The American journal of tropical medicine and hygiene,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Evaluation of MAT, IgM ELISA and PCR methods for the diagnosis of human leptospirosis.
May 2006, Journal of microbiological methods,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Use of patient-specific Leptospira isolates in the diagnosis of leptospirosis employing microscopic agglutination testing (MAT).
April 2011, Transactions of the Royal Society of Tropical Medicine and Hygiene,
N M Zin, and S N Othman, and F R Abd Rahman, and A R Abdul Rachman
Comparison of the Serion IgM ELISA and Microscopic Agglutination Test for diagnosis of Leptospira spp. infections in sera from different geographical origins and estimation of Leptospira seroprevalence in the Wiwa indigenous population from Colombia.
June 2022, PLoS neglected tropical diseases,
Copied contents to your clipboard!