did you not keep any backup samples? what did the lab say, did they not keep any of the original sample , sorry if it isn't the sort of thing that you can keep parts of, I know sometimes the whole thing is used, but it isn't always the case. I hope you have been on to them and asked for an explanation - and a pint of their blood as a reward - not suggesting you are a vampire or anything- but you should get something for causing so much hassle.