These elements are toxic to humans, especially at higher doses; however, the concentrations of these non-essential metals were below detectable limit.
Where sufficient sample size permitted, we assessed dose response by grouping organo-chlorine serum concentrations into three categories: below the minimum detectable limit, detection limit up to median concentration among persons with self-reported diabetes, and above the median concentration.
Monitoring data from Class A biosolids, which by definition must all be below the detectable limit of 1 plaque-forming unit (PFU) per 4 g, necessarily contain posttreatment concentrations below the detectable limit.
Analysis of the sintered ash samples/pellets for PCDD/Fs using standardized methods with GS-MS/MS equipment showed a major reduction in PCDD/Fs concentrations to below the detectable limit of 0.1 pg g−1.
Because 75% of the soil samples tested were below the detectable limit and we used 0.1 MPN/g as a value for soil samples below the limit of detection, our geometric mean value for all plots was below the limit of detection with a geometric mean of 0.40 MPN/g.
Also, the majority of the values for LIF, eotaxin, GM-CSF, IL-1α, IL-3, IL-12p40, IL-15 and TNF-β were below the detectable limit, and therefore these cytokines were scored on a dichotomous scale of detectable or undetectable value.
35 Increasing MTX or corticosteroid dose improved therapeutic response in poor responders after an initial response, although trough serum concentrations of infliximab remained below the detectable limit.
TNF-α was detected in the duodenum and jejunum of aroused animals but was below the detectable limit in these tissues of torpid animals.
The mean concentration in fish was, however, below the detectable limit, with the highest concentration of 0.97 mg/kg measured.
