ELISA Kit for Complement Component 3 (C3)
Organism species Rattus norvegicus (Rat)
Product No.CEA861Ra
Sample typeSerum, plasma and other biological fluids.
Format96-well strip plate
Assay length2.5 hours
Detection range24.69-2000ng/mL The standard curve concentrations used for the ELISA’s were 2000ng/mL, 666.67ng/mL, 222.22ng/mL, 74.07ng/mL, 24.69ng/mL
SensitivityThe minimum detectable dose of this kit is typically less than 9.24ng/mL.
This assay has high sensitivity and excellent specificity for detection of Complement Component 3 (C3).
No significant cross-reactivity or interference between Complement Component 3 (C3) and analogues was observed.
Matrices listed below were spiked with certain level of recombinant Complement Component 3 (C3) and the recovery rates were calculated by comparing the measured value to the expected amount of Complement Component 3 (C3) in samples.
Matrix Recovery range (%) Average(%)
EDTA plasma(n=5)96-104101
heparin plasma(n=5)80-10191
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Complement Component 3 (C3) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Complement Component 3 (C3) 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 Complement Component 3 (C3) 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
EDTA plasma(n=5)93-104%92-102%89-104%79-102%
heparin plasma(n=5)95-104%81-103%89-104%98-105%
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
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 50µL standard or sample to each well.
    And then add 50µL prepared Detection Reagent A immediately.
    Shake and mix. Incubate 1 hour at 37oC;
3. Aspirate and wash 5 times;
4. Add 90µL Substrate Solution. Incubate 15-25 minutes at 37oC;
5. Add 50µL Stop Solution. Read at 450 nm immediately.
Test principle
This assay employs the competitive inhibition enzyme immunoassay technique. An antibody specific to Complement Component 3 (C3) has been pre-coated onto a microplate. A competitive inhibition reaction is launched between Horseradish Peroxidase (HRP) labeled Complement Component 3 (C3) and unlabeled Complement Component 3 (C3) (Standards or samples) with the pre-coated antibody specific to Complement Component 3 (C3). After incubation the unbound conjugate is washed off. The amount of bound HRP conjugate is reverse proportional to the concentration of Complement Component 3 (C3) in the sample. After addition of the substrate solution, the intensity of color developed is reverse proportional to the concentration of Complement Component 3 (C3) in the sample.
Package and Components
Reagent Preparation
Results demonstration
Typical Standard Curve
Free use and Guarantees
Free trial
In case it is difficult to pre-evaluate experiment result because of specific test samples or other reasons, free trial can be offered.
If the budget is really limited or other special situation, you can apply the free products.
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Benchmark price
Kidney Int Sequential analysis of donor-specific antibodies and pathological findings in acute antibody-mediated rejection in a rat renal transplantation model.    Read more(Pubmed: 23615506)
Catalog No. Related products for research use of Rattus norvegicus (Rat) Organism species Applications
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