Comparison of time-resolved fluoroimmunoassay for determining hexoestrol residues in chicken muscle tissues based on polyclonal antibodies with liquid chromatography and tandem mass spectrometry.

A time-resolved fluoroimmunoassay (TR-FIA) was developed for the determination of hexoestrol (HES) residues in animal tissues. The limit of detection (LOD) was determined to be 0.02 ng g(-1) and the limit of quantification (LOQ) was less than 0.

Time-resolved fluoroimmunoassay for 19-nortestosterone residues in aquaculture tissues.

A competitive time-resolved fluoroimmunoassay (TR-FIA) was developed for the determination of 19-nortestosterone (17beta-NT) residues in aquaculture tissues. The limit of detection (LOD) was determined to be 0.08 ng g-1 and the limit of quantification (LOQ) was less than 0.

Determination of medroxyprogesterone acetate residues by CE immunoassay with chemiluminescence detection.

A rapid and simple method is developed for the determination of medroxyprogesterone acetate (MPA) by CE immunoassay with chemiluminescence (CL). This method is based on the competitive reactions between horseradish peroxidase (HRP)-labeled MPA (MPA-HRP) and free MPA with anti-MPA antiserum. The influencing factors on the electrophoresis and CL detection were studied completely and the optimal conditions of separation and determination were obtained.

Rapid determination of time-resolved fluoroimmunoassay for medroxyprogesterone acetate residues in pork tissues and comparison with liquid chromatography and tandem mass spectrometry.

A competitive time-resolved fluoroimmunoassay (TR-FIA) was developed for the determination of medroxyprogesterone acetate (MPA) residues in pork tissues. The limits of detection (LOD) was determined to be 0.06 ng g-1 and the limits of quantification (LOQ) was less than 0.

Rapid time-resolved fluoroimmunoassay for diethylstilbestrol residues in chicken liver.

A competitive time-resolved fluoroimmunoassay (TR-FIA) was developed for the determination of diethylstilbestrol (DES) residues in chicken liver. Prior to analysis, the residues were extracted from chicken liver with acetonitrile. The assay could be used in a quantitative or qualitative mode.