Vascular Laboratories at Parnassus

The UCSF Vascular Laboratories are a joint program of Vascular Surgery and Neurology that uses noninvasive procedures to confirm vascular conditions or identify the severity of a vascular disorder. Patients are examined using advanced ultrasound and other technologies, such as pulse volume recorders, that evaluate blood flow without injections and without pain. The lab also measures the success of treatments for vascular conditions.

The lab has two locations:

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The Vascular Laboratory in the Ambulatory Care Center is open Monday to Friday, 8 a.m. – 4 p.m.
Phone (415) 353-2357
Fax (415) 353-2669

Patients with the following conditions may be referred to one of the two labs for testing:

  • Abdominal aortic aneurysms
  • Carotid artery disease
  • Cerebrovascular disease and stroke
  • Chronic vein disease such as varicose veins and other disorders
  • Deep vein thrombosis or blood clots
  • Mesenteric artery disease or narrowing of the arteries that supply blood to the intestine
  • Peripheral artery disease in the arms, hands, legs and feet
  • Renal or kidney artery disease
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You'll need a referral from your primary care provider or specialist to make an appointment. Once you have the referral, please call the number below.

Getting Here

Vascular Laboratories at Parnassus
505 Parnassus Ave., Eighth Floor, Room M-830A
San Francisco, CA 94143
Phone: (415) 353-1286
Fax: (415) 353-8706

Hours: Monday to Friday
9 a.m. – 5:30 p.m.

What to Bring

  • Health insurance information including authorizations or referrals
  • List of prescription medications and dosages
  • List of medications that you're allergic to
  • List of questions you may have
  • Recent test results related to your condition
  • Paper and pencil to take notes

What to Expect

    All studies performed in the laboratory are noninvasive, meaning they don't require any incisions or needles. In fact, many patients are so relaxed that they fall asleep during the test.

    Ultrasound typically requires applying gel to the skin and applying a transducer — a device that converts energy into ultrasound — on the gel-covered areas to create images of blood vessels. Depending on the study, your test may take up to one hour.

Access Your Health Information Online

This clinic uses UCSF MyChart, an online patient service. Message your provider, request medication refills, view some test results and more.

Learn more about UCSF MyChart

Research and Clinical Trials

Studies Performed

The lab, equipped with state-of-the-art technology, offers a wide range of ultrasound procedures, including:

  • Abdominal Vascular Exams: Ultrasound is used to evaluate the blood vessels that bring blood to and away from the abdominal organs.
  • Extracranial Cerebrovascular Arterial Duplex Scans: Ultrasound is used to examine vessels of the head and neck, such as the carotid artery.
  • Transcranial Doppler Studies: This type of ultrasound exam is performed to study the blood vessels within the skull that supply the brain.
  • Venous and Arterial Studies of Legs and Arms: These studies evaluate blood flow from the legs and arms to the heart.


Parking at Parnassus

Public parking for an hourly fee at UCSF Medical Center is available in the seven-level Millberry Union Garage at 500 Parnassus Ave. There are two garage entrances — one on the north side of Parnassus Avenue and another on Irving Street, just east of Third Avenue.

Another garage with an hourly fee, at 350 Parnassus Ave., is open Monday to Friday from 6 a.m. to 10 p.m.

Metered street parking is rarely available.

Patients being admitted to the hospital may be dropped off at the circular driveway leading to the main entrance at 505 Parnassus Ave. This area also may be used to pick up patients who are being discharged.

For more information about parking at Parnassus, call Campus Parking Services at 476-2566.

Valet Parking Service

Valet parking service is available at the Ambulatory Care Center (ACC) at 400 Parnassus Ave. from 8 a.m. to 3 p.m. The valet service is free but patients must pay regular parking fees. For more information about the valet service, call (415) 476-6200.

A UCSF "greeter" also is available at the ACC from 8 a.m. to 5 p.m. to assist patients find their way.

Public Transportation


UCSF Medical Center is accessible via Muni streetcar line N-Judah*, which stops at Second Avenue and Irving Street, and the following Muni bus lines, which stop in front of the hospital:

  • 43-Masonic*
  • 6-Parnassus

For more information about Muni visit,

* Wheelchair accessible bus routes

Related Information

Ways to Give

Our Team

Michael Conte
Michael Conte, MD
Vascular surgeon
John Logan
John Logan
Technical director of Vascular Laboratories
Wade Smith
Wade Smith, PhD, MD