Earth & Environmental Sciences
urine
53%
screening
44%
gas chromatography
31%
mass spectrometry
28%
drug
27%
immunoassay
22%
workplace
18%
laboratory
18%
program
18%
seed
14%
assay
14%
dose
12%
food
11%
detection
9%
rate
5%
Medicine & Life Sciences
Codeine
68%
Opiate Alkaloids
55%
Morphine
38%
Urine
36%
Gas Chromatography-Mass Spectrometry
12%
Papaver
8%
Seeds
5%
Immunoassay
5%
Workplace
4%
Pharmaceutical Preparations
4%
Food
3%
Engineering & Materials Science
Opiate Alkaloids
100%
Screening
47%
Mass spectrometry
18%
Gas chromatography
18%
Testing
11%
Assays
8%
Seed
7%
Chemical Compounds
Codeine
68%
Morphine
54%
Percent Reduction
13%
Gas Chromatography Mass Spectrometry (GCMS)
8%
Immunoassay
5%
Dose
4%
Food
4%