TY  - GEN
AU  - Stolker,A A
AU  - van Ginkel,L A
AU  - Stephany,R W
AU  - Maxwell,R J
AU  - Parks,O W
AU  - Lightfield,A R
TI  - Supercritical fluid extraction of methyltestosterone, nortestosterone and testosterone at low ppb levels from fortified bovine urine
SN  - 1387-2273
PY  - 1999///0715
KW  - Animals
KW  - Cattle
KW  - Chromatography
KW  - methods
KW  - Chromatography, High Pressure Liquid
KW  - Gas Chromatography-Mass Spectrometry
KW  - Methyltestosterone
KW  - urine
KW  - Nandrolone
KW  - Testosterone
N1  - Publication Type: Journal Article; Research Support, Non-U.S. Gov't
UR  - https://doi.org/10.1016/s0378-4347(99)00039-0
ER  -