Virginia Mason's laboratories provide superior customer service focused on meeting the needs of our patients and providers. Our team is committed to providing prompt, personalized service for your laboratory testing needs.


We offer laboratory locations throughout Western Washington though our medical centers and Hospital & Seattle Medical Center. Follow the links below for more information about those locations.


To prepare for your visit to the lab some providers may ask you to fast for a test. Fasting requires no food or drink consumption except for water for 12 hours before the blood test. Medication generally does not affect fasting tests. If you have concerns about a medication you are taking interfering with a test please contact your provider. If you would like to know if your blood tests require fasting, you can check with your provider before coming in.

Day of laboratory visit

All Virginia Mason medical centers and the Hospital & Seattle Medical Center laboratory offer walk-in service as we do not schedule appointments. When you visit us, you can proceed directly to the laboratory. For laboratory testing it is not necessary to check in at the front desk in the lobby, but you may need to if you are having other services performed during your visit. When planning your visit to the lab, please be advised our busiest hours are from 7 a.m. to 1 p.m., Monday through Friday. There is also a small laboratory in the Lindeman Pavilion, Level 8. The hours are 8 a.m. to 5 p.m., Monday through Friday.

Take home tests

Some tests may need specimens to be collected at home. For questions about collection you can click below or call (206) 223-6701 and someone will be happy to help you.

  • Urine
    • 24-hour collection
    • Random collection
    • Urinalysis
  • Stool
    • 24, 48 or 72-hour collection
  • Sputum

Test Results

Your test results will be sent to your doctor once they have all been completed. Your provider will then notify you of your results. You can also view lab results on MyVirginiaMason. Learn more. For questions about how to interpret your results, we refer you to your provider. For general testing information, use this online reference guide.


The Patient Account Services Department is here to answer questions about Virginia Mason's billing process. If you have a question about how your insurance company will process charges, please contact your insurance company or review your benefits handbook.