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DELFI® Eu-labeled streptavidin is intended for use as a generic reagent to detect biotin-labeled compounds, e.g. antibodies or antigens in various types of immunoassay or nucleic acid probes in hybridization assays based on solid-phase separation. The label, Eu3+, is measured using dissociation-enhanced time-resolved fluorometry.
The streptavidin is isolated from fermentation filtrates of Streptomyces avidinii and 1 mg of streptavidin binds approximately 10 μg of biotin. The preparation is supplied ready to use in 50 mmol/L Tris-HCl buffered saline solution. For DELFIA immunoassays, a final concentration of 100 ng/mL is recommended for the generation of a suitable signal.
|Detection Method||Time-Resolved Fluorescence (TRF), DELFIA TRF|
|Experimental Type||In vitro|
|Product Brand Name||DELFIA|
|Shipping Condition||Blue Ice|
|Unit Size||250 µg|
DELFIA® immunoassays are particularly well suited for discovery of specific, high-affinity monoclonal antibodies (mAbs), especially at the low concentrations that may be present in hybridoma supernatants. An assay used in these conditions must be sensitive, specific, reliable, reproducible and easy enough to handle 1,000 to 1,500 samples in one batch.