This review paper examines and evaluates urine-sampling methodologies in infants and young children, to determine which methods are suitable for use in large biomonitoring surveys or studies of ...

Urine specimens are being collected and stored as part of standard protocols in cohort studies designed to assess exposure to nonpersistent environmental contaminants (Gunter, 1997; Landi and Caporaso ...

March 16, 2010 — Careful attention to urine collection methods can identify some attempts by patients to produce false-negative results. In this article, published in the March 1 issue of American ...