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  • Title: CRP determination based on a novel magnetic biosensor.
    Author: Meyer MH, Hartmann M, Krause HJ, Blankenstein G, Mueller-Chorus B, Oster J, Miethe P, Keusgen M.
    Journal: Biosens Bioelectron; 2007 Jan 15; 22(6):973-9. PubMed ID: 16766177.
    Abstract:
    The c-reactive protein (CRP) is a very significant human blood marker for inflammatory processes and is routinely determined for many clinical purposes. The widespread and well established detection method for this approximately 115 kDa hepatic protein is the high-sensitivity ELISA assay (hsCRP-ELISA) in blood serum. New approaches in medical CRP diagnosis (e.g. for CVD, inflammatory bowel disease) require rapid quantification in native matrices. A novel CRP determination method based on magnetic detection is described and tested for human blood serum, saliva and urine. The detection principle is based on two different anti-CRP antibodies (monoclonal, IgG) for CRP trapment and labelling. The linear detection range of this immunosensor ranged from 25 ng/ml to 2.5 microg/ml and is therefore much more sensitive than typical hsCRP-ELISA-assays.
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