Medical Tests & Diagnosis

Understanding Your Lab Results: Questions to Ask Your Doctor

Reference ranges differ between labs and one number rarely tells the whole story, so ask your doctor these questions about your results.
Doctor reviewing information on a computer with an older patient and a nurse during a consultation

Lab results often arrive as a list of numbers next to a “normal” range. That range is a reference, and it can vary slightly from one lab to another. A result just outside the range does not automatically mean something is wrong, and a result inside it does not rule out every problem.

Your doctor reads results alongside your symptoms, medical history and other tests. Online searches can cause needless worry, so it helps to go over the numbers with your care team.

  • What does this result mean for me?
  • Do I need follow-up or repeat tests?
  • Could my medicines, food or activity have affected it?
  • When should I be checked again?

Contact your doctor if you have questions or new symptoms.

Health information, not medical advice. This article is for general education and does not replace a professional diagnosis or treatment. If you have symptoms or questions about your health, talk to a qualified health provider, and call your local emergency number in an emergency.

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