The Experts below are selected from a list of 3 Experts worldwide ranked by ideXlab platform
Maynar M Marino - One of the best experts on this subject based on the ideXlab platform.
-
determination of Nandrolone and metabolites in urine samples from sedentary persons and sportsmen
Journal of Chromatography B: Biomedical Sciences and Applications, 2001Co-Authors: A Galan M Martin, J Maynar I Marino, M Garcia P De Tiedra, J Rivero J Marabe, M Caballero J Loscos, Maynar M MarinoAbstract:Metabolites of Nandrolone were determined in the urine of several sportsmen, sedentary and post-menopausal women by capillary gas chromatography–mass spectrometry quadrupole (GC–MS) and capillary gas chromatography mass–mass spectrometry ion trap (GC–MS–MS) methods. The method employed was GC–EI-MS with 17α-methyltestosterone as internal standard with ethyl ether extraction prior to selected ion monitoring of the bis(trimethylsilyl) ethers at ion masses m/z 405 and 420 for the Nandrolone metabolites, and 418 and 403 for Nandrolone Derivative. Recovery for Nandrolone, 19-norandrosterone (19-NA) and 19-noretiocholanolone (19-NE) was 97.20, 94.17 and 95.54%, respectively. Detection limits for Nandrolone, 19-NA and 19-NE were 0.03, 0.01 and 0.06 ng/ml. Metabolites of Nandrolone (19-NA and 19-NE) were found in 12.5% (n=40) of sportsmen and 40% (n=10) of post-menopausal women.
A Galan M Martin - One of the best experts on this subject based on the ideXlab platform.
-
determination of Nandrolone and metabolites in urine samples from sedentary persons and sportsmen
Journal of Chromatography B: Biomedical Sciences and Applications, 2001Co-Authors: A Galan M Martin, J Maynar I Marino, M Garcia P De Tiedra, J Rivero J Marabe, M Caballero J Loscos, Maynar M MarinoAbstract:Metabolites of Nandrolone were determined in the urine of several sportsmen, sedentary and post-menopausal women by capillary gas chromatography–mass spectrometry quadrupole (GC–MS) and capillary gas chromatography mass–mass spectrometry ion trap (GC–MS–MS) methods. The method employed was GC–EI-MS with 17α-methyltestosterone as internal standard with ethyl ether extraction prior to selected ion monitoring of the bis(trimethylsilyl) ethers at ion masses m/z 405 and 420 for the Nandrolone metabolites, and 418 and 403 for Nandrolone Derivative. Recovery for Nandrolone, 19-norandrosterone (19-NA) and 19-noretiocholanolone (19-NE) was 97.20, 94.17 and 95.54%, respectively. Detection limits for Nandrolone, 19-NA and 19-NE were 0.03, 0.01 and 0.06 ng/ml. Metabolites of Nandrolone (19-NA and 19-NE) were found in 12.5% (n=40) of sportsmen and 40% (n=10) of post-menopausal women.
J Maynar I Marino - One of the best experts on this subject based on the ideXlab platform.
-
determination of Nandrolone and metabolites in urine samples from sedentary persons and sportsmen
Journal of Chromatography B: Biomedical Sciences and Applications, 2001Co-Authors: A Galan M Martin, J Maynar I Marino, M Garcia P De Tiedra, J Rivero J Marabe, M Caballero J Loscos, Maynar M MarinoAbstract:Metabolites of Nandrolone were determined in the urine of several sportsmen, sedentary and post-menopausal women by capillary gas chromatography–mass spectrometry quadrupole (GC–MS) and capillary gas chromatography mass–mass spectrometry ion trap (GC–MS–MS) methods. The method employed was GC–EI-MS with 17α-methyltestosterone as internal standard with ethyl ether extraction prior to selected ion monitoring of the bis(trimethylsilyl) ethers at ion masses m/z 405 and 420 for the Nandrolone metabolites, and 418 and 403 for Nandrolone Derivative. Recovery for Nandrolone, 19-norandrosterone (19-NA) and 19-noretiocholanolone (19-NE) was 97.20, 94.17 and 95.54%, respectively. Detection limits for Nandrolone, 19-NA and 19-NE were 0.03, 0.01 and 0.06 ng/ml. Metabolites of Nandrolone (19-NA and 19-NE) were found in 12.5% (n=40) of sportsmen and 40% (n=10) of post-menopausal women.
M Garcia P De Tiedra - One of the best experts on this subject based on the ideXlab platform.
-
determination of Nandrolone and metabolites in urine samples from sedentary persons and sportsmen
Journal of Chromatography B: Biomedical Sciences and Applications, 2001Co-Authors: A Galan M Martin, J Maynar I Marino, M Garcia P De Tiedra, J Rivero J Marabe, M Caballero J Loscos, Maynar M MarinoAbstract:Metabolites of Nandrolone were determined in the urine of several sportsmen, sedentary and post-menopausal women by capillary gas chromatography–mass spectrometry quadrupole (GC–MS) and capillary gas chromatography mass–mass spectrometry ion trap (GC–MS–MS) methods. The method employed was GC–EI-MS with 17α-methyltestosterone as internal standard with ethyl ether extraction prior to selected ion monitoring of the bis(trimethylsilyl) ethers at ion masses m/z 405 and 420 for the Nandrolone metabolites, and 418 and 403 for Nandrolone Derivative. Recovery for Nandrolone, 19-norandrosterone (19-NA) and 19-noretiocholanolone (19-NE) was 97.20, 94.17 and 95.54%, respectively. Detection limits for Nandrolone, 19-NA and 19-NE were 0.03, 0.01 and 0.06 ng/ml. Metabolites of Nandrolone (19-NA and 19-NE) were found in 12.5% (n=40) of sportsmen and 40% (n=10) of post-menopausal women.
J Rivero J Marabe - One of the best experts on this subject based on the ideXlab platform.
-
determination of Nandrolone and metabolites in urine samples from sedentary persons and sportsmen
Journal of Chromatography B: Biomedical Sciences and Applications, 2001Co-Authors: A Galan M Martin, J Maynar I Marino, M Garcia P De Tiedra, J Rivero J Marabe, M Caballero J Loscos, Maynar M MarinoAbstract:Metabolites of Nandrolone were determined in the urine of several sportsmen, sedentary and post-menopausal women by capillary gas chromatography–mass spectrometry quadrupole (GC–MS) and capillary gas chromatography mass–mass spectrometry ion trap (GC–MS–MS) methods. The method employed was GC–EI-MS with 17α-methyltestosterone as internal standard with ethyl ether extraction prior to selected ion monitoring of the bis(trimethylsilyl) ethers at ion masses m/z 405 and 420 for the Nandrolone metabolites, and 418 and 403 for Nandrolone Derivative. Recovery for Nandrolone, 19-norandrosterone (19-NA) and 19-noretiocholanolone (19-NE) was 97.20, 94.17 and 95.54%, respectively. Detection limits for Nandrolone, 19-NA and 19-NE were 0.03, 0.01 and 0.06 ng/ml. Metabolites of Nandrolone (19-NA and 19-NE) were found in 12.5% (n=40) of sportsmen and 40% (n=10) of post-menopausal women.
