Cross-reactivity

Rapid Diagnostic Test for Visceral Leishmaniasis (Kala-azar): Introduction, Principle, Procedure, Result-Interpretation, Clinical Significance and Keynnotes

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An InBiOS Detect rapid diagnostic test for Visceral Leishmaniasis (Kala-azar) that appears to show two visible lines, which is consistent with a positive antibody result

Introduction The Rapid Diagnostic Test (RDT) for Visceral Leishmaniasis (VL), often known as the rK39 test or Kalazar Detect™, is a specific, non-invasive immunochromatographic assay used to detect antibodies against Leishmania parasites in human serum or blood. Visceral Leishmaniasis (Kala-azar) is a severe, potentially fatal …

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Aspergillus-Antigen Testing:Introduction, Principle, Clinical Significance, and Keynotes

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Aspergillus-Antigen Testing-Introduction, Principle, Clinical Significance, and Keynotes

Introduction Aspergillus species, particularly Aspergillus fumigatus, are major causes of invasive aspergillosis (IA), especially in immunocompromised patients, such as those with hematological malignancies, transplant recipients, or those with prolonged neutropenia. Diagnosis of IA is often challenging because clinical symptoms and radiological findings are nonspecific. Aspergillus …

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Histoplasma-Antibody Testing: Introduction, Principle, Clinical Significance, and Keynotes

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Introduction Histoplasma capsulatum is a dimorphic fungus responsible for histoplasmosis, a systemic mycosis prevalent in endemic regions such as the Ohio and Mississippi River valleys, parts of Latin America, Africa, and Asia. Rapid and reliable diagnosis is crucial since clinical features may mimic tuberculosis, malignancy, …

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Candida-Antibody Testing-Introduction, Principle, Purpose, Types of antibody tests, Limitation, and More

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Candida albicans growth on Biphasic medium (BHI agar and broth)-right (turbid)- No growth on left (clear)

Introduction Candida antibody testing measures immunoglobulins (IgG, IgA, and IgM) antibodies in the blood to help detect current or past Candida infections. These antibodies are produced in response to the presence of Candida in the body, assisting the immune system in fighting off the fungus. Principle Purpose …

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Immunofluorescence assay (IFA)-Introduction, Principle, Types, Procedure, Result-Interpretation, Advantage, Disadvantage, and Interfering Factors of ELISA Test Results, and Keynotes

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Introduction Immunofluorescence assay (IFA) is a laboratory technique used for detecting and visualizing specific antigens or antibodies in biological samples. It combines the principles of both immunology and fluorescence microscopy to provide highly specific and sensitive results. IFA is widely employed in various fields, including …

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Scrub Typhus IgM Test: Introduction, Test Result, Test Method, Clinical Significance, and Keynotes

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Testing Scrub Typhus Antibodies (IgM and IgG) at home

Introduction The Scrub Typhus IgM test is a diagnostic assay used to detect IgM antibodies against the bacteria Orientia tsutsugamushi, which causes scrub typhus, a vector-borne infectious disease. It is prevalent in certain parts of Asia, the Pacific Islands, and other regions with heavy vegetation …

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HIV ELISA: Introduction, Test Result, Test Method, Clinical Significance, and Keynotes

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HIV ELISA: Introduction, Test Result, Test Method, Clinical Significance, and Keynotes

Introduction HIV ELISA (Enzyme-Linked Immunosorbent Assay) is a widely used laboratory test for the detection of antibodies to the Human Immunodeficiency Virus (HIV) in blood samples. It plays a crucial role in the diagnosis and screening of HIV infection. ELISA is an immunological assay that …

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Salmonella Typhi IgM and IgG Test: Introduction, Test Report, Test Method, Clinical Significance, Keynotes

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Salmonella rapid test

Introduction The Salmonella Typhi IgM and IgG test is a serological test used to detect antibodies produced by the immune system in response to Salmonella Typhi, the bacterium responsible for causing typhoid fever. This test helps in diagnosing and confirming cases of typhoid fever, a …

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