Phencyclidine Confirmation, Urine, Quantitative by GC/MS is an accurate test used to determine the level of phencyclidine (PCP) in a urine sample. Phencyclidine is a powerful drug often used illegally, and it can cause serious psychological and physical effects. A urine sample is collected and analyzed using gas chromatography followed by mass spectrometry, providing reliable and precise results about the amount of phencyclidine present. This analysis is commonly used in medical and legal contexts, such as monitoring drug use or confirming positive results from initial screening tests. Phencyclidine testing helps doctors assess the patient's condition and determine appropriate treatment, and it can also be used in other contexts such as employment or security screening. Therefore, this test is a valuable tool in healthcare and monitoring.