Lysozyme (Stool) ELISA Assay Kit


The Lysozyme (Stool) ELISA Assay Kit is an enzyme immunoassay intended for the quantitative determination of lysozyme in stool. The Eagle Biosciences Lysozyme Stool ELISA Assay Kit is For research use only and not for use in diagnostic procedures.

SKU: KR6900 Categories: , ,

Lysozyme (Stool) ELISA Assay Kit

Lysozyme Stool ELISA Assay Kit manufactured in Germany by Immundiagnostik

Size: 1×96 wells
Standard Range: 1.1-30 ng/ml
Incubation Time: 1h; 1h; 10-20min
Sample Type: Stool
Sample Size: 15 mg
For Research Use Only

Assay Principle

The Lysozyme Stool ELISA Assay Kit assay utilizes the “sandwich” technique with two selected antibodies that recognise human lysozyme.
Standards, controls and diluted samples, which are assayed for human lysozyme, are added into the wells of a micro plate coated with a high affine anti-human lysozyme antibody. During the first incubation step, lysozyme is bound by the immobilised antibody. Then a peroxidase-conjugated anti-human lysozyme antibody is added into each microtiter well and a “sandwich” of capture antibody – human lysozyme – peroxidase-conjugate is formed. Tetramethylbenzidine is used as peroxidase sub-strate. Finally, an acidic stop solution is added to terminate the enzymatic reaction. The colour changes from blue to yellow. The intensity of the yellow colour is directly proportional to the concentration of lysozyme. A dose response curve of the absorbance unit (optical density, OD at 450 nm) vs. concentration is generated using the values obtained from the standards. Lysozyme present in the samples is determined directly from this curve.

• Diagnosis and monitoring of Crohn’s Disease
• Early diagnosis of rejection reactions in kidney transplantation cases
• Differential diagnosis and monitoring of leukosis
• Diagnosis and treatment monitoring of urinary tract infections in children
• Differential diagnosis between viral and bacterial meningitis in children
• Identification of sepsis in neonates

Quality Control and Reference Range
We recommend the use of external controls for internal quality control, if possible.
Control samples should be analysed with each run. Results, generated from the analysis of control samples, should be evaluated for acceptability using appropriate statistical methods. The results for the patient samples may not be valid if within the same assay one or more values of the quality control sample are outside the acceptable limits.
Reference range
Based on studies of stool samples of apparently healthy persons (n = 80), a reference value of lysozyme < 600ng/ml was estimated. We recommend each laboratory to establish its own reference range.

Related Products

Lysozyme (Serum/urine/liquor) ELISA
Thymulin ELISA Kit
Thymosin beta-4 (ß4) Assay Kit

Additional Information

Assay Background

Lysozyme (muramidase) is a protein with a molecular weight of approx. 15 kDa and belongs to the group of alkaline glycosidases. Lysozyme is produced by granulo-cytes, monocytes and macrophages. The main source for faecal lysozyme are the intestinal granulocytes. Lysozyme can be detected in all cells of the inflammatory infiltrate during an acute attack of Crohn‘s disease. To some extent, lysozyme is also secreted actively by mononuclear cells into the bowel lumen.

Package Inserts

Please note: All documents above are for reference use only and should not be used in place of the documents included with this physical product. If digital copies are needed, please contact us.

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