Abcam, ab243686, Human Complement Factor D ELISA Kit

Size: 1 x 96Tests
Human Complement Factor D ELISA Kit is a single-wash 90-min Simplestep used to quantify Human Complement Factor D with a sensitivity of 2.6 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step. - Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader - Design your own immunoassay: we also offer the conjugation-ready antibody pair
Key facts
Detection method:Colorimetric,
Sample types:Urine, Heparin Plasma, Citrate plasma, Cell culture supernatant, Serum, EDTA Plasma,
Reacts with:Human,
Assay type:Sandwich (quantitative),
Sensitivity:= 2.6 pg/mL,
Range:15.63 - 1000 pg/mL,
Assay time:1h 30m,
Assay Platform:Pre-coated microplate (12 x 8 well strips)

Product details:
Human Complement Factor D ELISA Kit (ab243686) is a single-wash 90 min sandwich ELISA designed for the quantitative measurement of Complement Factor D protein in cell culture supernatant, cit plasma, edta plasma, hep plasma, serum, and urine. It uses our proprietary SimpleStep ELISA® technology. Quantitate Human Complement Factor D with 2.6 pg/ml sensitivity.
SimpleStep ELISA® technology employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA® plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA® protocol summary in the image section for further details. Our SimpleStep ELISA® technology provides several benefits:
- Single-wash protocol reduces assay time to 90 minutes or less
- High sensitivity, specificity and reproducibility from superior antibodies
- Fully validated in biological samples
- 96-wells plate breakable into 12 x 8 wells strips
A 384-well SimpleStep ELISA® microplate (
ab203359
) is available to use as an alternative to the 96-well microplate provided with SimpleStep ELISA® kits.

Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions-+4°C, Storage information-+4°C

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Factor D also known as complement factor D or CFD protein is a serine protease involved in the alternative pathway of the complement system. It plays a mechanical role by cleaving factor B when it is bound to C3b forming the active C3 convertase C3bBb. This enzyme is relatively small with a mass of approximately 28.5 kDa. It is mainly expressed in adipose tissue but it can also be found in the blood plasma.
Biological function summary
Factor D aids the immune system's ability to destroy pathogens. As part of the alternative complement pathway it acts independently and does not associate with larger protein complexes. Its activation of the alternative pathway leads to direct lysis of pathogens therefore contributing to innate immunity.
Pathways
Factor D participates specifically in the complement activation pathway particularly in the innate immune response. It works closely with other proteins in the complement system such as factor B and C3. This pathway enhances the opsonization and removal of microbes and damaged cells acting in parallel with the classical pathway of the complement system.
Abnormal function or regulation of factor D can relate to chronic inflammation and age-related macular degeneration. Disorders involving factor D may involve excess complement activation leading to tissue damage. The role of factor D in these diseases often connects it to other key complement components such as C3 and factor B which can also become problematic when dysregulated.