WellSpan Home

Health Library

Sjögren Antibody (Blood)

Does this test have other names?

SS-A (or Ro), SS-B (or La)  

What is this test?

This is a blood test for Sjögren syndrome. This condition is an autoimmune disease that makes it hard for your glands to make enough moisture. The condition causes discomfort by drying out mucous membranes, including the ones in the mouth, eyes, nose, lungs, and vagina. Sjögren may also affect the joints, kidneys, and the nervous, vascular, respiratory, and digestive systems.

To help diagnose the condition, healthcare providers use this blood test to check for Sjögren-related autoantibodies. These are substances in the blood that attack the body's tissues instead of foreign substances like bacteria.

Sjögren is a common problem. Women are affected more than men. Sjögren often happens along with other autoimmune disorders, such as rheumatoid arthritis or lupus. 

Why do I need this test?

You might need this test if you have abnormal liver tests or show symptoms of Sjögren syndrome. These include:

  • Dry eyes or corneal ulcers

  • Gritty sensation in the eyes

  • Feeling of dryness in the mouth and difficulty swallowing dry food

  • Heartburn and reflux

  • Arthritis

  • Muscle pain

  • Repeated bouts of bronchitis and pneumonia

  • Difficulty concentrating and "brain fog"

  • Numbness and tingling in the feet and toes

  • Dry skin

  • Sore tongue

  • Vaginal dryness 

What other tests might I have along with this test?

You may need other tests to help diagnose Sjögren. These include:

  • Schirmer test to measure eye dryness

  • Salivary flow study

  • Salivary scintigraphy

  • Salivary gland biopsy

You may also have other blood tests. These include those for other autoantibodies, antinuclear antibody, rheumatoid factor (RF), and erythrocyte sedimentation rate (ESR).

What do my test results mean?

Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your healthcare provider. 

A number of conditions can cause dryness of the eyes and mouth, but if you have certain antibodies in your blood, it means you may have Sjögren. These autoantibodies include:

  • SS-A, also called Ro

  • SS-B, also called La

  • Antinuclear antibody, or ANA

A normal test doesn't show any antibodies to Ro or La. But people with Sjögren don't always have these autoantibodies. 

How is this test done?

The test requires a blood sample, which is drawn through a needle from a vein in your arm.

Does this test pose any risks?

Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore. 

What might affect my test results?

Other conditions can cause a positive test for Ro or La, including lupus and vasculitis.

How do I get ready for this test?

You don't need to prepare for this test. Be sure your healthcare provider knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use. 

Sjogren Antibody (Blood) - WellSpan Health

Author: Metcalf, Eric
Online Medical Reviewer: Turley, Ray, BSN, MSN
Online Medical Reviewer: Walton-Ziegler, Olivia, MS, PA-C
Last Review Date: 2015-10-16T00:00:00
Last Modified Date: 2015-12-24T00:00:00
Published Date: 2015-12-24T00:00:00
Last Review Date: 2012-05-11T00:00:00
© 2016 WellSpan Health. All Rights Reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

I would like to:

Are you sure you would like to cancel?

All information will be lost.

Yes No ×

About the provider search

This search will provide you with WellSpan Medical Group and Northern Lancaster County (Ephrata) Medical Group primary care physicians and specialists. If we don’t have a WellSpan Medical Group physician to meet your criteria, the search will expand to include community physicians who partner with WellSpan Medical Group physicians through the WellSpan Provider Network or provide care to patients on the Medical Staffs of WellSpan’s Hospitals.


Schedule Your Next Appointment Online with MyWellSpan

Use your MyWellSpan patient portal any time to view available appointments, and pick the date and time that best suits your schedule.

Go to MyWellSpan

New to this practice?

If you don't have a WellSpan primary care provider and would like to schedule a new patient appointment with a provider who is accepting patients, just log into your MyWellSpan account, and go to the Appointment Center section. As you progress through the scheduling process, you will be able to see the offices that are accepting new patients in relation to your zip code. If you are not enrolled in MyWellSpan, go to https://my.wellspan.org, call 1-866-638-1842 or speak with a member of the staff at a participating facility to sign up. New patient scheduling not available at all practices/programs.

Already a patient at this practice?

If you already have a relationship with a WellSpan practice, simply log into your account, and go to the Appointment Center section. As you progress through the scheduling process, you will be able to schedule an appointment with any provider or practice that already counts you as a patient. Online scheduling varies by practice/program.