Human C-Reactive Protein/CRP QuicKit ELISA Summary
Cell Culture Supernates, Serum, Plasma
|Intra-Assay Precision||Inter-Assay Precision|
The recovery of human CRP spiked to three levels in samples throughout the range of the assay was evaluated.
|Sample Type||Average % Recovery||Range %|
|Cell Culture Media (n=4)||96||92-102|
Human CRP Standard Curve ELISA
Human CRP QuicKit Spiked Recovery Competitor Comparison CRP is spiked at three known concentrations throughout the range of the assay and run to measure response of the spiked sample matrix. Culture media recovery is 95% compared to 84% for the top competitor. In spike and recovery experiments, natural samples are spiked with the recombinant target analyte of interest to identify interference caused by sample matrices.
Preparation and Storage
Background: C-Reactive Protein/CRP
C-Reactive Protein (CRP), also known as Pentraxin 1, is a secreted pentameric protein that functions as a sensor and activator for the innate immune response. In humans, it is a major acute-phase protein; its circulating concentration is dramatically elevated at the onset of inflammation. In mice, however, serum CRP levels increase only slightly during inflammation, and the analogous acute phase role is filled by Pentraxin 2. CRP binds, opsonizes, and induces the phagocytosis of bacteria and apoptotic cells. It regulates activation of the classical complement pathway by binding several proteins in the complement cascade as well as Fc gamma RI, Fc gamma RIIA, and Fc gamma RIIB on macrophages and dendritic cells. It also promotes dendritic cell maturation and humoral immunity. In cardiovascular disease, CRP binds to oxidized LDL, exacerbates tissue damage in myocardial infarction, and inhibits the repair of injured vascular endothelium.
These assays utilize an anti-tag coated microplate. Standards, samples, and controls are added to plate, followed by subsequent addition of an antibody cocktail. Following a 1 hour incubation, plates are washed and substrate is added and incubated for 20 minutes. Stop solution is then added and plates are read using a standard microplate reader.
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