Understanding the service
How lab results are used
Laboratory tests analyze samples and can provide information used to detect, diagnose, or monitor a condition. Results are interpreted together with medical history, an exam, and other clinical information.
This educational information does not replace guidance from a professional or confirm which test or treatment is appropriate for any person.
What to know about a lab test
A laboratory test may analyze blood, urine, other body fluids, or tissue, depending on the information needed.
Age, medicines, food or drink, and preparation can affect a result, which is why it is interpreted in context.
Some tests require fasting or other instructions. Do not change medicines or supplements unless a professional tells you to.
