Very similar to the other cases we have been talking about. Prosecutors must typically show the substance in question is an actual drug, and that the drug is illegal. For a drug to be constituted illegal in this context. The defendant must not have the right, or a prescription, to take it. It is the burden of the government to then show the person arrested does not have a legal prescription for the drug. Prescription drug cases in Odessa may be different to other drug cases since authorities typically examine look to see if the defendant has or had a prescription for the drug and if they have an addiction issue. Counseling and certain tests may show the accused person is no longer taking the prescription. Certain urinalysis or hair follicle test could help the case get resolved.