Client responds to local Police Department in regards to civil restraining order. Officer at station alleges client drives into parking lot erratically, slurs words and is slow and lethargic. Officer requests second patrolman respond to investigate possible DWI Drugs and contact field sobriety tests. Post arrest blood test reveals 17029 ng/ml Butalbital. Defense contrasts testimony of second officer who contradicts observations of first officer and challenges validity of blood test which discloses what should be a lethal level of controlled drug. Not guilty verdict following trial.