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 non-glycosylated protein in the Pentraxin family that also includes Pentraxin 2/SAP and Pentraxin 3/TSG-14. CRP functions as a sensor and activator of the innate immune response (1). In humans, it is a major acute-phase protein; its circulating concentration is dramatically elevated at the onset of inflammation (2). In mice, however, serum CRP levels increase only slightly during inflammation, and the analogous acute phase role is filled by Pentraxin 2 (3). CRP assembles non-covalently into a 110-120 kDa cyclical pentamer (4). Mature human CRP shares 71% and 64% amino acid (aa) sequence identity with mouse and rat CRP, respectively (5).
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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