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) .
Multiple âimpressionsâ are made by printing new pieces of paper from the matrix in the same way. The total number of impressions an artist decides to make for any one image is called an edition. In modern times each impression in an edition is signed and numbered by the artist, but this is a relatively recent practice.