Journal article
Plasma Interference in an Enzyme-Linked Immunosorbant Assay Using a Commercial Matched Antibody Pair
Immunological investigations, Vol.28(4), pp.209-221
1999
Handle:
https://hdl.handle.net/2376/115020
PMID: 10453999
Abstract
In this study, severe plasma interference was repeatedly documented in an IL-lra sandwich enzyme-linked immunosorbant assay (ELISA) using a commercial matched antibody pair. Several physical and biochemical treatments were used in an attempt to alleviate this plasma effect including the following: buffer optimization, sample dilution, increasing incubation temperature, heat treatment of plasma, increasing detergent concentrations, glutaraldehyde pretreatment of the plate and the addition of polyethylene glycol (PEG). Evaluation of several buffers demonstrated that the range of optical densities could be increased dramatically with the use of an appropriate buffer. Of the treatments examined, only the addition of polyethylene glycol (PEG) to the dilution buffer created a marked improvement in the ELISA, despite a resulting background increase. Further investigation demonstrated that 10% PEG in the dilution buffer added to biotinylated antibody and the streptavidin provided the greatest improvement to the sensitivity of the ELISA.
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Details
- Title
- Plasma Interference in an Enzyme-Linked Immunosorbant Assay Using a Commercial Matched Antibody Pair
- Creators
- J. A Nemzek - 1The University of Michigan, Department of Pathology M2210 Medical Science I, 1301 Catherine Road, Ann Arbor, Michigan, 48109-0602D. E Newcomb - 1The University of Michigan, Department of Pathology M2210 Medical Science I, 1301 Catherine Road, Ann Arbor, Michigan, 48109-0602D. R Call - 1The University of Michigan, Department of Pathology M2210 Medical Science I, 1301 Catherine Road, Ann Arbor, Michigan, 48109-0602D. G Remick - 1The University of Michigan, Department of Pathology M2210 Medical Science I, 1301 Catherine Road, Ann Arbor, Michigan, 48109-0602
- Publication Details
- Immunological investigations, Vol.28(4), pp.209-221
- Publisher
- Informa UK Ltd
- Identifiers
- 99900547607801842
- Language
- English
- Resource Type
- Journal article