Can I find my European Ancestry from my blood?

No, you will be disappointed and would have spent money on a DNA test which is not done by blood anyway and 'could' tell you thousands of years ago that you originated from eg the Asian or European continent.....it doesn't tell you England or Denmark, it doesn't discriminate in detail, so you would be no better off. Your ethnicity is about culture, custom, affiliation, background and association, that will be from where you grew up and who brought you up, not where your ancestors came from 3,000 years ago You want to find your ancestry prior to the US, those records exist it is just about finding them and working slowly back to find out...some you will have and your living family will have even if you don't recognise them as 'records' we all have records and most people can get back 3-5 generations from these records...which then enables you to look externally in records offices, archives and online for more http://familytimeline.webs.com/

just a slightly different approach, since you have two excellent answers about dna testing. "I don't have many records" No..people don't have records always at home, but that is where research comes in. You use what you have to get going, then explore historical records to get further. Say you don't know who were the parents of your grandfather, born in 1935. You use an index online to find he died in 1987, in Georgia, then you send for his death cert. This document names his parents...and now you look to find them in the 1930 census which is the latest one open. To your surprise, the census includes data on place of birth of a person and their parents. For another ancestor, you learn he is a US citizen born in another country...which tells you that your next search is finding naturalization records, and surprise, that tells you he came in 1893, and you sometimes then can find the ship records. so, no..dna tests won't give ancestry, except in rare situations. to compare the various lines, to see which lines have a common ancestor. I found the other day, where a distant cousin submitted his sample..only to be told he matched none of them. There had been a rumor that our ancestor was not a Biggs by birth but a Manning. Voila, he used the test result to compare to a Manning dna group..and results match. So the test was of value to lead us to the right birthname for further research. so... hang out here and we can explain how to find records that will be more explicit. edit http://freepages.genealogy.rootsweb.ancestry.com/~sfollis/sources/genealogy_hoaxes.html some background on known scam operations incl houseofnames

There is no DNA test as yet that can do what you are proposing. You might read the information on the Soreson Data Base site. The explanation of DNA is in lay terms and not difficult to understand.

DNA tests for genealogical purposes use swabs you swab your cheeks with. I recommend www.familytreedna.com, the oldest and also has the largest data bases. Family Tree also does the DNA testing for the National Geographics Genotype Program, which traces human migration world wide. The highest degree of accuracy of any DNA test (paternity, genealogy, criminal) is about 99%. In otherwords, your DNA test can tell you your ancestors came from Germany, but they might have been from Poland. I have a high degree of confidence in the tests; mine says I have ancestors from each country in Europe and the Middle East, as well as scattered around the world. My paper trail has led me to each country in Europe and the Middle East. So, yes, DNA tests can reveal where in the world your ancestors came from; no, it can not tell you names, dates, exact places where they lived nor can it tell you what language they spoke, what they ate/drank; their religion/politics, etc. (their ethnicity or culture).