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New reusable Celite/ethylene glycol cartridges for selective chromatography of steroids before immunoassay
Frank Giton1, Jérôme Guéchot, Jean Fiet
1AP-HP CIB GHU Sud Henri Mondor, Faculté de Médecine, 8 rue du Général Sarrail, Créteil, France. giton@univ-paris12.fr
Objectives:
Preparation of reusable and easy to handle Celite chromatographic columns.
Design And Methods:
Weighting precise Celite quantities in cartridges and introducing ethylene glycol methanol solutions. The chromatographic solvents pass throughout Celite under negative pressure.
Results:
These new minicolumns are reusable. The steroid recoveries' coefficients of variation are less than 10%, and the steroid separation is good.
Conclusions:
The reusable Celite cartridge use before steroid immunoassays is easier and less time-consuming than classical glass Celite minicolumns.
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