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Title: Second antibody chemically linked to cellulose for the separation of bound and free hormone: an improvement over soluble second antibody in gonadotrophin radioimmunoassay
Authors: Koninckx, Philippe ×
Bouillon, Roger
De Moor, Pieter #
Issue Date: Jan-1976
Publisher: Editura Academiei Romane
Series Title: Acta endocrinologica vol:81 issue:1 pages:43-53
Abstract: Coupling the second antibody to a solid pase (DASP) was found to be a definite improvement over the classical technique of soluble second antibody (DA) separation of bound and free hormone in the radioimmunoassays of gonadotrophins in plasma or in serum. The duration (2.5 to 7.5 min) and the pH (10.5 to 12.5) of the cyanogen bromide activation of microcristalline cellulose did not affect the coupling capacity or the immunoreactivity of the second antibody, nor did it augment aspecific adsorption of free gonadotrophin on the cellulose matrix. Precision of duplicates was comparable for both methods but the accuracy and the detection limit of the solid phase system were higher due to a better separation of bound and free hormone, to the lower blank value and to the absence of aspecific interference of protein concentration. Cost was lower since much less second antibody was needed in the solid phase system than in the soluble system and since the experimental procedures were simplified by the absence of prozoning effect and the solid nature of the cellulose matrix.
ISSN: 1841-0987
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Basic Research in Gynaecology Section (-)
Clinical and Experimental Endocrinology
× corresponding author
# (joint) last author

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