The phrase "lipid concentrations" refers to the amount or level of lipids, which are types of fats, in a given sample, such as blood or cells. Full definition
Blood lipid concentrations were assessed according to standard methods (17). (academic.oup.com)
In subjects with cardiovascular disease, low - GI diets were shown to be associated with improvements in insulin sensitivity and blood lipid concentrations (23, 26). (academic.oup.com)
Blake and coworkers (1997) evaluated the effect of depolymerized guar galactomannan on fasting plasma lipid concentrations in volunteers with moderately raised plasma cholesterol. (nap.edu)