The lawyer representing 28-year-old /*Melissa Huckaby*/ says another examination is crucial to his client's defense.
The San Joaquin County coroner conducted an autopsy on /*Cantu*/, whose body was placed in a suitcase and submerged in an irrigation pond.
The cause of death will not be released until toxicology reports are finished.
The defense request came Thursday; the same day thousands attended a memorial service for the Tracy girl.
A judge declined to rule on the request, but the issue is expected to be addressed at a hearing next week.