A Cotinine in Freeze-Dried Urine Reference Material
A cotinine in freeze-dried urine reference material (RM 8444) was prepared at three concentrations: (1) a “blank” level typical of nonsmokers with no exposure to cigarette smoke, (2) a “low” level corresponding to nonsmokers with passive exposure to side-stream smoke, and (3) a “high” level typical...
| Main Authors: | , |
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| Format: | Online |
| Language: | English |
| Published: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
1989
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4948964/ |