Olanzapine
Olanzapine is an atypical antipsychotic drug used in the treatment of bipolar disorder and schizophrenia.
Tested in urine only.
Oxazepam
Oxazepam is a benzodiazepine used to treat anxiety, insomnia, and symptoms associated with alcohol withdrawl.
Tested in both urine and oral fluid.
Oxcarbazepine
Oxcarbazepine is an anticonvulsant used in the treatment of epilepsy and mood disorders.
Tested in urine only.
Oxycodone
Oxycodone is a semi-synthetic analgesic used to treat moderate to severe pain.
Tested in both urine and oral fluid.
Oxymorphone
Oxymorphone is an opiate used to treat moderate to severe pain.
Tested in both urine and oral fluid.