Service Providers for Phenobarbital
The Phenobarbital test measures the level of the drug in the blood to monitor therapy and avoid toxicity. Preparation typically involves fasting for a few hours before the test. Steps include drawing blood from a vein. Risks are minimal but may include discomfort or bruising at the needle site. After the test, normal activities can be resumed. Results indicate whether the drug level is within the therapeutic range; too high or too low may require dosage adjustments. Conditions like liver disease or kidney problems can affect drug metabolism, influencing test results.