An elevated D-dimer level is not normal. It is usually found after a clot has formed and is in the process of breaking down. If you are having significant formation and breakdown of blood clot in your body, your D-dimer may be elevated. A negative D-dimer test means that a blood clot is highly unlikely.
Purpose [edit]. Counting impressions is the method by which most Web advertising is accounted and paid for, and the cost is quoted in CPI (cost per impression) .
Lesson Summary. Impression management is the effort to control or shape another person's perceptive. We commonly use impression management to influence outside views of ourselves, or in the business world, various products. We do this in order to gain some sort of material or emotional reward, and to express ourselves.