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Leishmaniasis, a neglected tropical disease caused by protozoan parasites of the genus Leishmania, poses a significant global health burden, affecting millions of people across more than 90 countries. Transmitted through the bites of infected female phlebotomine sandflies, the disease manifests in several clinical forms, including cutaneous, mucocutaneous, and visceral leishmaniasis. Among these, visceral leishmaniasis, also known as kala-azar, is the most severe form, often fatal if left untreated. Early and accurate diagnosis is crucial for effective treatment and control of the disease spread. Serological tests play a vital role in the diagnosis of leishmaniasis, particularly in regions where the disease is endemic. The detection of specific antibodies against Leishmania parasites in human serum provides valuable information for confirming infection. The Anti-Leishmania IgG ELISA Kit for Human Serology is a sophisticated diagnostic tool designed to detect immunoglobulin G (IgG) antibodies against Leishmania species in human serum samples, offering high sensitivity and specificity for reliable results.
Figure 1. Leishmania.
The Anti-Leishmania IgG ELISA Kit is an in vitro diagnostic enzyme immunoassay for the qualitative and/or quantitative detection of IgG class antibodies against Leishmania spp. in human serum or plasma. It is intended for use as an aid in the diagnosis of active visceral leishmaniasis and can also be a valuable tool in seroprevalence studies.
Technology Platform
Sample Type Compatibility
Sensitivity Profile
Kit Features
Performance Characteristics
Sample Collection and Preparation
Applications in Clinical and Research Settings
Storage and Handling
Calculation
Determination
| Parameter | Details |
| Product name | Leishmania Antibody ELISA Kit |
| Sample | Serum, plasma |
| Intended Use | This kit is intended for the qualitative determination of IgG class antibodies against Leishmania infantum in human serum or plasma (citrate, heparin). |
| Species Reactivity | Store the kit at 2-8 °C. The opened reagents are stable up to the expiry date stated on the label when stored at 2-8 °C. |
| Storage | Leishmania are protozoa belonging to the family trypanosomatidae. The parasites exist in two forms: the promastigotes in the midgut of the vector insect, and the amastigotes within the phagolysosomes of macrophages in their mammalian hosts. In the macrophages they live as round, non-motile amastigotes (3-7 μm in diameter). The macrophages are ingested by the sandfly during blood-meal and the amastigotes are released into their stomach. Almost immediately the amastigotes transform in to the motile, elongated (10-20μm), flagellate promastigote form, which migrate to the alimentary tract of the fly and after multiplication move forward to the salivary glands of the insect. Leishmaniases are a globally widespread group of parasitic diseases; the "type" is determined by the primary location of the macrophages that are infected. In humans four different forms of Leishmaniasis with a broad range of clinical manifestations are present; all can have devasting consequences. Leishmaniasis currently affects some 12 million people in 88 countries, all but 16 of which are in the developing world. |
The results of the Anti-Leishmania IgG ELISA Kit are interpreted based on the absorbance values obtained from the microplate reader.
Calculate the mean absorbance value for each duplicate sample, positive control, and negative control.
Determine the cut-off value, which is typically calculated as the mean absorbance of the negative control plus a certain factor (e.g., 0.100 or 2-3 standard deviations above the negative control mean). The specific cut-off value is provided in the kit instructions.
Classify the samples:
Quality Control: The positive control should have an absorbance value above the cut-off, and the negative control should have an absorbance value below the cut-off. If the controls do not meet these criteria, the assay may be invalid, and the test should be repeated.
Fast turnaround time
Most test kits can detect results within 2-3 hours, which is faster than virus culture and on par with RIDT. This allows clinicians to make clinical decisions in a timely manner.
Specificity
Specificity is the ability of the kit to correctly identify individuals without leishmaniasis. It is evaluated using serum samples from healthy individuals and those with other infectious diseases to avoid cross-reactivity.
Precision
Precision includes intra-assay and inter-assay precision. Intra-assay precision is determined by testing the same sample multiple times within a single assay, while inter-assay precision is evaluated by testing the same sample in multiple assays on different days.
The Anti-Leishmania IgG ELISA Kit is a cornerstone in the modern diagnostic arsenal against leishmaniasis. Its high degree of accuracy, standardization, and suitability for high-throughput testing make it an indispensable tool for clinical laboratories, reference centers, and public health programs worldwide. By enabling the reliable detection of specific antibodies, this kit facilitates earlier diagnosis and intervention for visceral leishmaniasis, ultimately contributing to reduced mortality and improved patient outcomes. It also provides critical data for understanding the epidemiology of this complex disease, paving the way for more effective control and elimination strategies.
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