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) .
It seems every measurement tool has its own definition of a âSocial Impressionâ, but that definition always takes the theoretical maximum number of views based on the number of followers each participant has. Unfortunately, the metric is disingenuous at best.