Science news articles about 'urinary levels'

Higher levels of urinary Bisphenol A (BPA), a chemical compound commonly used in plastic packaging for food and ... normal" levels of BPA exposure. David Melzer, M.B., Ph.D., of Peninsula Medical School, ...

... initial interview and collection of urine samples. Levels of NNAL in the urine were divided into three groups. ... per day, number of years of smoking, and urinary levels of cotinine on lung cancer risk ...