http://www.orlandosentinel.com/news/local/caylee-anthony/orl-bk-casey-anthony-documents-050109,0,3192956.story
Hair samples taken from Caylee Marie Anthony's remains were tested for a variety of drugs, with negative results.
Examiners did not detect alprazolam, known under the trade name Xanax, or diazepam, marketed as Valium. The FBI report states the hair sample was not tested for chloroform, "as this examination is not deemed probative by the FBI Laboratory's Chemistry Unit."
"Although the method used in this analysis allows for the detection of very small amounts of the drugs listed, negative results should not be interpreted as proof that the individual was not exposed to the drugs listed," the report stated.