Who said he cleaned any of his own DNA off? the fact his DNA wasn't on Jodi, even though they were in contact at school that day, but Kelly's dna was present, only proves more that the source of the DNA must have been the shirt she chaned into before going to meet Luke! simple!
well im going to post the dna report in a minute its already up here but ill post it again.
so your saying absence of dna means your guilty but its presence means your innocent.
luke was forensically examined that night his hair fingernails were dirty meaning he hadn't cleaned himself up.
so if hes a killer how does he get rid of all traces of jodi without even having a wash.