If tests are ordered by your physician complete them as soon as possible. Your physician will be encouraged if he knows you are actively engaged in the process of restoring your health. Diagnostic testing may be ordered to help further identify the cause of your pain. These oftentimes include an MRI scan, CT scan, nerve conduction studies, or laboratory evaluations for things such as blood count differentials, sedimentation rates, thyroid function, hormone levels, and vitamin levels. Genetic testing may also be undertaken in order to determine whether the medication prescribed for you is appropriate or not. Psychological testing might be requested to determine if your pain condition is complicated by any of the common issues that accompany chronic pain including anxiety, depression, or sleep disturbance. You will be required, in many instances, to undergo urine drug testing or other laboratory testing. This is for your safety and diagnosis of your pain condition.