f**k that, i would be going to get legal advice, get the test done and if it is legal then talk to a lawyer about taking the cops to court to recover costs as they have no evidence to support there case, all they have one cops opinion with no facts to back it up.
im sure there will be manu more SAUers in the same boat, the more people who take this to court the more this blitz will be shown as the scam it is.