WellSpan Home

Lab Tests for Fibromyalgia

Topic Overview

Doctors do not use lab tests to diagnose fibromyalgia. The results of lab tests done on people with fibromyalgia should be normal unless another condition is present.

You may have lab tests to rule out other diseases or to find out whether you have another disease in addition to fibromyalgia. Fibromyalgia may occur along with other joint and muscle (rheumatic) diseases, such as rheumatoid arthritis. Finding these other conditions is important, because they may need different treatment.

If your doctor thinks that you may have another muscle or joint disease based on your symptoms, history, and physical exam, he or she may do any of the following tests:

  • A complete blood count (CBC)
  • An erythrocyte sedimentation rate (ESR) or a C-reactive protein (CRP) test to help identify diseases that cause inflammation, such as polymyalgia rheumatica
  • A rheumatoid factor (RF) test to check for rheumatoid arthritis
  • An antinuclear antibodies (ANA) test to check for certain conditions such as systemic lupus erythematosus (a condition that can affect the bones and skin and several other organs)
  • Thyroid hormone tests to check for low or high thyroid gland activity. Thyroid problems can cause fatigue and muscle soreness.
  • A blood calcium level test to check for a low calcium level, which can cause muscle cramps

The test results may show that you have a disease other than fibromyalgia. It is also possible that you have both fibromyalgia and another condition. Test results can be false-positive.

Doctors do not use these tests to diagnose fibromyalgia. You only need them if your medical history and physical exam suggest that you might have a condition other than fibromyalgia.

Related Information

Credits

ByHealthwise Staff
Primary Medical ReviewerAnne C. Poinier, MD - Internal Medicine
Adam Husney, MD - Family Medicine
Martin J. Gabica, MD - Family Medicine
Kathleen Romito, MD - Family Medicine

Current as ofOctober 9, 2017


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.

×