Conrad Murray wants a key piece of evidence tested which his lawyers argue could prove Michael Jackson injected himself with the drug that killed him.
Murray, who is serving a four-year prison sentence, is appealing last year's involuntary manslaughter conviction in Jackson's 2009 death.
A motion filed Monday by his lawyers asked an appeals court to order a test of the residue in a 100 milliliter bottle of propofol that prosecutors say contained the fatal dose of surgical anesthetic.
If it contains 10% lidocaine, then it would support prosecution expert Dr. Steven Shafer's theory that Murray rigged up an IV drip using the bottle and then left the room, Murray's motion said.
Shafer testified that lidocaine, which was found in Jackson's blood after his death, was mixed with propofol to ease the sting of the drug as it entered a vein in Jackson's leg.
"However, if the residue is 100% propofol, it would absolutely refute Shafer's final contention that was used to prove an IV propofol infusion," the motion said.
The defense theory was that a desperate Jackson, fearing that his comeback concerts could be canceled unless he found elusive sleep, self-administered propofol that Murray was trying to wean him off of. It contends that Jackson also swallowed eight lorazepam tablets while Murray was not watching.FULL STORY