ELISA Kit for Immunoglobulin M (IgM)

IGHM; Immunoglobulin Heavy Constant Mu; Ig mu chain C region


This assay has high sensitivity and excellent specificity for detection of Immunoglobulin M (IgM).
No significant cross-reactivity or interference between Immunoglobulin M (IgM) and analogues was observed.


Matrices listed below were spiked with certain level of recombinant Immunoglobulin M (IgM) and the recovery rates were calculated by comparing the measured value to the expected amount of Immunoglobulin M (IgM) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 78-102 88
EDTA plasma(n=5) 96-105 101
heparin plasma(n=5) 83-94 91


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Immunoglobulin M (IgM) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Immunoglobulin M (IgM) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%


The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Immunoglobulin M (IgM) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 93-101% 78-90% 80-97% 96-105%
EDTA plasma(n=5) 80-96% 89-97% 99-105% 92-101%
heparin plasma(n=5) 92-99% 84-94% 86-103% 80-99%


The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided

Reagents Quantity Reagents Quantity
Pre-coated, ready to use 96-well strip plate 1 Plate sealer for 96 wells 4
Standard 2 Standard Diluent 1×20mL
Detection Reagent A 1×120µL Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
TMB Substrate 1×9mL Stop Solution 1×6mL
Wash Buffer (30 × concentrate) 1×20mL Instruction manual 1

Assay procedure summary

1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.



Magazine Citations
Poultry Science Effects of Clostridium butyricum on growth performance, immune function, and cecal microflora in broiler chickens challenged with Escherichia coli K88 Pubmed: 24570422
Clin Vaccine Immunol. Speci?c Humoral Immune Response Induced by Propionibacterium acnes Can Prevent Actinobacillus pleuropneumoniae Infection in Mice Pubmed:24429068
Food and Agricultural Immunology Effects of fermented cottonseed meal on growth performance, serum biochemical parameters, immune functions, antioxidative abilities, and cecal microflora in broilers 10.108:09540105.2017.1311308
International Journal of Clinical and Experimental Medicine Detection of streptococcus pyogenes antibodies in acute idiopathic urticaria ISSN:1940-5901/IJCEM0053690
Food and Agricultural Immunology Effects of and on growth performance, immune function and volatile fatty acid level of caecal digesta in broilers 10.1080:09540105.2018.1457013
SAGE Open Medicine Altered immunoglobulins (A and G) in Ghanaian patients with type 2 diabetes Pubmed:29623201
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