Most patients were paying a high income for their insurance and were often upset when their prescriptions required a $50 co-pay, or that they had not met their $4,000 deductable and must give the entire cost out-of-pocket. In Oklahoma, pharmacists are forced to obtain a valid photo identification before dispensing any controlled, dangerous substance. The respiratory therapist's tasks include offering the precise measurements of oxygen or other forms of gas concentrations inside the patient's blood and also measuring blood alkalinity or acidity levels.