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Human Complement C3 ELISA Kit ab108823 is used to quantify Human Complement C3 with a sensitivity of 0.32 ng/mL.

Sandwich ELISA Kit
- Validated in a range of biological samples including CSF


Images

Sandwich ELISA - Human Complement C3 ELISA Kit (AB108823), expandable thumbnail
  • Sandwich ELISA - Human Complement C3 ELISA Kit (AB108823), expandable thumbnail
  • Sandwich ELISA - Human Complement C3 ELISA Kit (AB108823), expandable thumbnail

Publications

Key facts

Detection method
Colorimetric
Sample types
Tissue, Cerebral Spinal Fluid, Saliva, Urine, Cell culture supernatant, Milk, Cell Lysate
Assay type
Sandwich (quantitative)
Reactive species
Human
Range
0.625 - 40 ng/mL
Assay time
4h
Sensitivity
>= 84 pg/mL

Reactivity data

Application
sELISA
Reactivity
Reacts
Dilution info
-
Notes

-

Associated Products

Select an associated product type

1 product for Alternative Product

Target data

Function

C3 plays a central role in the activation of the complement system. Its processing by C3 convertase is the central reaction in both classical and alternative complement pathways. After activation C3b can bind covalently, via its reactive thioester, to cell surface carbohydrates or immune aggregates. Derived from proteolytic degradation of complement C3, C3a anaphylatoxin is a mediator of local inflammatory process. In chronic inflammation, acts as a chemoattractant for neutrophils (By similarity). It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes. C3-beta-c. Acts as a chemoattractant for neutrophils in chronic inflammation. Acylation stimulating protein. Adipogenic hormone that stimulates triglyceride (TG) synthesis and glucose transport in adipocytes, regulating fat storage and playing a role in postprandial TG clearance. Appears to stimulate TG synthesis via activation of the PLC, MAPK and AKT signaling pathways. Ligand for C5AR2. Promotes the phosphorylation, ARRB2-mediated internalization and recycling of C5AR2 (PubMed:10432298, PubMed:15833747, PubMed:16333141, PubMed:19615750, PubMed:2909530, PubMed:8376604, PubMed:9059512).

Alternative names

What's included?

1 x 96 Tests
Components
100X Streptavidin-Peroxidase Conjugate
1 x 80 µL
10X Diluent N Concentrate
1 x 30 mL
20X Wash Buffer Concentrate
2 x 30 mL
50X Biotinylated Human Complement C3 Antibody
1 x 120 µL
Chromogen Substrate
1 x 7 mL
Complement C3 Microplate (12 x 8 well strips)
1 x 1 Unit
Complement C3 Standard
1 x 1 Vial
Sealing Tapes
3 x 1 Unit
Stop Solution
1 x 11 mL

Recommended products

Human Complement C3 ELISA Kit ab108823 is used to quantify Human Complement C3 with a sensitivity of 0.32 ng/mL.

Sandwich ELISA Kit
- Validated in a range of biological samples including CSF

Key facts

Detection method
Colorimetric
Sample types
Tissue, Cerebral Spinal Fluid, Saliva, Urine, Cell culture supernatant, Milk, Cell Lysate
Assay type
Sandwich (quantitative)
Reactive species
Human
Range
0.625 - 40 ng/mL
Assay time
4h
Assay Platform
Microplate
Sensitivity
>= 84 pg/mL
General recovery
104%

Precision

Intra assay

Sample
Overall
n
0
mean
-
SD
-
C.V.
6

Inter assay

Sample
Overall
n
0
mean
-
SD
-
C.V.
10.7

Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
-20°C
Appropriate long-term storage conditions
Multi
Storage information
Please refer to protocols

Notes

Human Complement C3 ELISA kit is designed for the quantitative measurement of Complement C3 concentrations in Human urine, milk, saliva, cerebrospinal fluid and cell culture supernatants.

A Complement C3 specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently a Complement C3 specific biotinylated detection antibody is added and then followed by washing with wash buffer. Streptavidin-Peroxidase Conjugate is added and unbound conjugates are washed away with wash buffer. TMB is then used to visualize Streptavidin-Peroxidase enzymatic reaction. TMB is catalyzed by Streptavidin-Peroxidase to produce a blue color product that changes into yellow after adding acidic stop solution. The density of yellow coloration is directly proportional to the amount of Complement C3 captured in plate.

The entire kit may be stored at -20°C for long term storage before reconstitution - Avoid repeated freeze-thaw cycles.

Human Complement C3 ELISA Kit ab108823 is a sandwich ELISA to measure Human complement C3 in urine, milk, saliva, cerebrospinal fluid and cell culture supernatants with a sensitivity of 84 pg/mL.

How the assay works

A Complement C3 specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently a Complement C3 specific biotinylated detection antibody is added and then followed by washing with wash buffer. Streptavidin-Peroxidase Conjugate is added and unbound conjugates are washed away with wash buffer. TMB is then used to visualize Streptavidin-Peroxidase enzymatic reaction. TMB is catalyzed by Streptavidin-Peroxidase to produce a blue color product that changes into yellow after adding acidic stop solution. The density of yellow coloration is directly proportional to the amount of Complement C3 captured in plate.

Assay specificity

This kit recognizes Complement C3 in urine, milk, saliva, cerebrospinal fluid, tissue and cell culture supernatant

Human Complement C3 ELISA Kit ab108823 protocol summary

1. Add samples and standards to wells. Incubate at room temperature.

2. Wash each well and add enzyme-antibody conjugate. Incubate at room temperature.

3. Wash each well and add Streptavidin Solution. Incubate at room temperature.

4. Add TMB Solution to each well. Incubate at room temperature.

5. Add Stop Solution to each well. Read immediately.

How other researchers are using Human C3 ELISA kit ab108823

Human C3 ELISA kit ab108823 has been used in the study of the relationsip between microglia and complement in Huntingdon's disease (1)and to assess the function of kidney organoids (2).

References:

(1): DK Wilton et al. 2023, PMID: 37814059,
(2)M Lasse et al., 2023,PMID: 37580326

Related and recommended products

Human Complement C3 Elisa kit ab108823 is commonly used to assess the ability of the immune system to fight infection.

Other ELISA kits to measure complement factors include:

- Human Complement factor H ELISA Kit Human Complement factor H ELISA Kit ab252359
- Human Complement Factor I ELISA Kit Human Complement Factor I ELISA Kit ab284615
- Human C4b ELISA Kit (Complement C4-B) Human C4b ELISA Kit (Complement C4-B) ab277717
- Human C8a (Complement C8a) ELISA Kit Human C8a (Complement C8a) ELISA Kit ab288173
- Human Complement Factor D ELISA Kit Human Complement Factor D ELISA Kit ab243686

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.
Activity summary

Complement component 3 (C3) commonly known as C3 complement is a central protein in the complement system which plays a significant role in immune response. C3b a fragment of C3 is produced when C3 undergoes cleavage. C3 is a large protein with a mass of approximately 185 kDa. The liver primarily secretes C3 into the bloodstream. It circulates in the plasma and is found in high concentration making it one of the most abundant components of the complement system.

Biological function summary

Complement component C3 forms part of the innate immune system by promoting opsonization which enhances phagocytosis of pathogens. C3b binds to pathogens' surfaces facilitating their recognition by phagocytes. C3 as part of a complex with C3 convertase also has a role in amplifying the activation of the complement cascade. The proteolytic cleavage of C3 into C3b and C3a leads to the activation of other components forming the membrane attack complex and orchestrating inflammation.

Pathways

The complement component C3 functions within both the classical and alternative complement pathways. It acts as a convergence point where the complement activation pathways meet. C3 is activated into C3b and C3a which are key to amplifying the cascade. Furthermore C3 interacts with proteins such as factor B and factor D in the alternative pathway and C4 and C2 in the classical pathway facilitating the formation of C3 convertase necessary for pathway progression.

Associated diseases and disorders

Complement C3 shows associations with immune-related and inflammatory diseases. Deficiencies or malfunctions of complement C3 can lead to increased susceptibility to infections due to impaired opsonization and clearance of pathogens. Additionally overactivation of the complement system involving C3 can contribute to autoimmune disorders such as systemic lupus erythematosus. Other proteins linked to these diseases include C4 in lupus and factor H in age-related macular degeneration which controls complement pathway activation.

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3 product images

  • Sandwich ELISA - Human Complement C3 ELISA Kit (ab108823), expandable thumbnail

    Sandwich ELISA - Human Complement C3 ELISA Kit (ab108823)

    Complement C3 measured in various samples showing quantity (microgram) per mL of tested sample

  • Sandwich ELISA - Human Complement C3 ELISA Kit (ab108823), expandable thumbnail

    Sandwich ELISA - Human Complement C3 ELISA Kit (ab108823)

    Representative Standard Curve using ab108823

  • Sandwich ELISA - Human Complement C3 ELISA Kit (ab108823), expandable thumbnail

    Sandwich ELISA - Human Complement C3 ELISA Kit (ab108823)

    Representative Standard Curve using ab108823

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can:

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