Your role in the performance of a lab test is to provide a specimen that will be analyzed in a laboratory. The specimen you provide might be a small amount of a body fluid, such as blood, saliva, semen, or urine, or a sample of stool or hair. You can be assured that Labcorp staff will make the specimen collection process as safe, quick, and comfortable as possible, while safeguarding your dignity and privacy. For more information about what to expect, visit our What to Expect section.