>That technique is blind testing with published results. 10% of all submissions to the testing lab would be test samples -- a mix of a bunch of known negative samples (from individuals completely unrelated to the crime in question) and a few known positive samples (perhaps from someone already convicted with overwhelming evidence). The lab would not be told which samples were tests and which were "real", and the test samples would be evenly distributed (10% of the submissions from each department; 10% of the "rush" submissions, etc.). Finally, the results reported on these test samples would be made publicly available.

And not only would it let you weed out the pseudoscience but it would let you weed out the labs that are practicing the real science well from the ones that are sloppy (which in my opinion is an equally large problem).