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) .
Impression Management Impression Management, also known as self-presentation, is the process by which we try to convey a certain impression of ourselves (usually positive) to others. For example, on the first day of work a new employee may wear his best suit so that his co-workers think he is professional, stylish, and competent.