
Treatment Treatment for high RF levels depends on the underlying cause. For example, in people with rheumatoid arthritis, Sjögren’s disease, and other chronic conditions, treatment aims to slow the progression of the condition and help prevent or reduce symptoms.
Full Answer
Why is a positive rheumatoid factor test important?
Because rheumatoid factor may be present in other conditions, and in some healthy people, the test for it should be combined with other tools and criteria for it to be useful in diagnosis. A positive rheumatoid factor test is also used to determine a general prognosis for rheumatoid arthritis in adults and children.
Can you test negative for rheumatoid factor and still have arthritis?
Patients who test negative for rheumatoid factor but still exhibit symptoms and meet other diagnostic criteria may still be diagnosed with rheumatoid arthritis. Diagnosing Rheumatoid Arthritis with the Rheumatoid Factor Test Patients who test positive for rheumatoid factor aren’t necessarily diagnosed with rheumatoid arthritis right away.
What is a rheumatoid factor (RF) test?
A rheumatoid factor (RF) test is a blood test that can help diagnose rheumatoid arthritis (RA). High RF levels can indicate RA, but it is only one aspect of a full diagnosis. High RF can also occur...
How do you test for rheumatoid factor?
How to Test for Rheumatoid Factor. Testing for rheumatoid factor is done through a blood test. The blood is drawn then analyzed for the presence of this particular protein. If the results show a certain level of rheumatoid factor, then the test is said to be positive.

What if my RA factor is positive?
Results. A positive rheumatoid factor test result indicates that a high level of rheumatoid factor was detected in your blood. A higher level of rheumatoid factor in your blood is closely associated with autoimmune disease, particularly rheumatoid arthritis.
When should you start RA treatment?
If a person has had an early RA diagnosis for less than six months and has met the criteria for a diagnosis of RA, they will be treated with a conventional synthetic disease-modifying anti-rheumatic drug (DMARD ).
Can you have a positive rheumatoid factor and not have rheumatoid arthritis?
Tested randomly, a positive RF result could sometimes show up in a person without arthritis or other autoimmune disease symptoms, but who has a family history of them, such as RA. But that doesn't mean they'll develop autoimmune problems. “Without clinical correlation, it doesn't mean much,” says Dr. Schulz.
Can you test positive for RA and not have it?
Since RA is an autoimmune disease, many people with RA have positive ANA tests. However, a positive test doesn't mean you have RA. Many people have positive, low-level ANA tests without clinical evidence of RA.
Is it better to treat rheumatoid arthritis early?
Although there's no cure for rheumatoid arthritis, early treatment and support (including medicine, lifestyle changes, supportive treatments and surgery) can reduce the risk of joint damage and limit the impact of the condition.
Can RA remain mild?
The severity of rheumatoid arthritis varies from person to person and can be mild, moderate, or severe. When you have rheumatoid arthritis, your immune system mistakenly attacks the linings of your joints (called synovium), causing them to become inflamed and painful.
How do you treat high rheumatoid factor?
TreatmentNSAIDs . Nonsteroidal anti-inflammatory drugs (NSAIDs) can relieve pain and reduce inflammation. ... Steroids. Corticosteroid medications, such as prednisone, reduce inflammation and pain and slow joint damage. ... Conventional DMARDs . ... Biologic agents. ... Targeted synthetic DMARDs .
Can rheumatoid factor change from positive to negative?
Your rheumatoid arthritis markers may change over time from negative to positive, since many people with seronegative rheumatoid arthritis begin to develop RF or ACPA antibodies. “It happens, but it's not that common,” says Dr. Domingues. Dr.
What does a slightly elevated rheumatoid factor mean?
High RF levels in the blood can indicate an autoimmune condition, such as rheumatoid arthritis. An RF test is a blood test that can help diagnose rheumatoid arthritis. High RF levels can indicate rheumatoid arthritis, but this is only one aspect of a full diagnosis.
What illness mimics rheumatoid arthritis?
The autoimmune diseases systemic lupus erythematosus and scleroderma often present with joint involvement that mimics rheumatoid arthritis. While lupus and scleroderma are two different diseases, they often overlap with one another.
What are usually the first signs of rheumatoid arthritis?
The early warning signs of RA include:Fatigue. Before experiencing any other symptoms, a person with RA may feel extremely tired and lack energy. ... Slight fever. Inflammation associated with RA may cause people to feel unwell and feverish. ... Weight loss. ... Stiffness. ... Joint tenderness. ... Joint pain. ... Joint swelling. ... Joint redness.More items...
Can RA factor be reduced?
Exercise. In addition to performing targeted stretches, some dynamic, low-stress forms of exercise can benefit people living with RA. Activities such as swimming or cycling can strengthen the muscles around the affected joints. This can help reduce the overall impact on the joints and slow the progression of RA.
What does a positive rheumatoid factor test mean?
A positive rheumatoid factor test result indicates that a high level of rheumatoid factor was detected in your blood. A higher level of rheumatoid factor in your blood is closely associated with autoimmune disease, particularly rheumatoid arthritis.
Why do you need a rheumatoid factor test?
Why it's done. A rheumatoid factor test is one of a group of blood tests primarily used to help pinpoint a diagnosis of rheumatoid arthritis. These other tests may include: The amount of rheumatoid factor in your blood may also help your doctor choose the treatment approach that will work best for your situation.
What are the tests for rheumatoid arthritis?
A rheumatoid factor test is one of a group of blood tests primarily used to help pinpoint a diagnosis of rheumatoid arthritis. These other tests may include: 1 Anti-nuclear antibody (ANA) 2 Anti-cyclic citrullinated peptide (anti-CCP) antibodies 3 C-reactive protein (CRP) 4 Erythrocyte sedimentation rate (ESR, or sed rate)
Can rheumatoid factor be positive?
Some healthy people — particularly older individuals — have positive rheumatoid factor tests, though it's not clear why. And some people who have rheumatoid arthritis will have low levels of rheumatoid factor in their blood. By Mayo Clinic Staff.
Is rheumatoid factor high in blood?
High levels of rheumatoid factor in the blood are most often associated with autoimmune diseases, such as rheumatoid arthritis and Sjogren's syndrome. But rheumatoid factor may be detected in some healthy people, and people with autoimmune diseases sometimes have normal levels of rheumatoid factor.
What are some examples of rheumatoid factors?
Other conditions associated with arthritis may result in a positive rheumatoid factor: Sjogren's syndrome and systemic lupus erythematosus are good examples, but these conditions usually cause other symptoms and blood test abnormalities that provide clues to the diagnosis.
What is RF decision guide?
This decision Guide is designed for persons with a positive rheumatoid factor (RF) who would like to find out more about this test and what the result may mean.
Can a person with rheumatoid arthritis have a family history of RF?
People with a family history of rheumatoid arthritis (or other RF-associated disorder) are more likely to have relatives with a positive RF, even if no disease is present.
Is a positive RF more likely to be a disease?
Also, when the RF is positive without disease present, it is usually only slightly positive, while higher levels are more likely to indicate "true" disease of one sort or another. See below for conditions other than rheumatoid arthritis associated with a positive RF.
Can a viral infection cause RF?
Certain infections, including endocarditis, viral infections, and others may trigger RF production by the body's immune system. Once the infection passes, repeat RF testing usually reveals negative results. Hepatitis C, a viral infection of the liver, is one of the more common ones, especially when a protein called "cryoglobulin" is present. This infection can be chronic (long-standing) so the RF may remain positive.
Can you make RF without a disease?
People who tend to make one "autoantibody" (an antibody created against a part of one's own organs or tissues) may make others; so if you have an "autoimmune" condition, such as certain thyroid diseases or even type 1 diabetes, you may be more likely to make RF even without an associated disease.
Is RF a negative antibody?
In fact, healthy people with no arthritis and no medical problems at all make tiny amounts of this antibody. In 90-95 percent of young, healthy persons, the amount of RF present in the blood is so low that it is considered absent from the blood and the test is considered negative (the " normal" result).
What is rheumatoid factor?
Share on Facebook. Rheumatoid factor is a protein in your body that attacks healthy tissue. A high rheumatoid factor is indicative of rheumatoid arthritis (RA), a painful condition that causes stiff, swollen, painful joints and fatigue. You have many treatment options available to you to treat this condition.
How to treat RA?
Adequate rest is also important for easing inflammation. A good exercise routine is an important part of treatment for RA.
What are the inhibitors of TNF-alpha?
TNF-alpha inhibitors attack TNF-alpha, a protein that promotes inflammation. They reduce pain, stiffness and swelling and include Enbrel, Remicade and Humira.
How effective are corticosteroids?
If they are unsuccessful, other treatments are available. Corticosteroids quickly reduce pain and inflammation, slowing joint damage. They are most effective for short-term relief. Their power diminishes with long-term use, and they can cause many serious side effects.
What determines the most appropriate medication for a patient?
Medications. Your doctor will determine the most appropriate medications based on several factors. They include the severity of your condition, the length of time symptoms have been manifesting, blood tests, your overall health and the presence of any other medical problems . The most commonly prescribed treatments are listed below.
Do you need to take all the supplements for RA?
The University of Maryland Medical Center suggests the following supplements might be of benefit for treating RA. You do not need to take them all as some offer similar benefits. Consulting with a health-care professional experienced in natural medicine is beneficial for determining appropriate supplementation.
Can rheumatoid arthritis be cured?
Rheumatoid arthritis cannot be cured, only managed. The main goal of treatment is to ease inflammation. This relieves pain and slows or prevents further joint damage. Medications are the primary form of treatment, but surgery might be necessary if your joints are severely damaged.
What blood test is used to diagnose rheumatoid arthritis?
Share on Pinterest. Imaging tests, such as X-rays, can help a doctor to diagnose rheumatoid arthritis accurately. If a doctor suspects RA, they will often order other blood tests alongside or after an RF test, including: anti-cyclic citrullinated peptide (anti-CCP) tests. C-reactive protein (CRP) test.
How to tell if you have rheumatoid arthritis?
Some signs and symptoms of rheumatoid arthritis include: 1 pain and stiffness in the joints 2 swelling and inflammation in the joints 3 loss of range of motion 4 nodules under the skin 5 general fatigue
What does RF mean in blood test?
Rheumatoid factor is an immune system protein that attacks healthy body cells. High levels of rheumatoid factor in the blood can indicate an autoimmune condition, such as rheumatoid arthritis. A rheumatoid factor (RF) test is a blood test that can help diagnose rheumatoid arthritis (RA).
Why do doctors use RF tests?
An RF test is one test doctors use to help diagnose autoimmune conditions.
How much more likely is rheumatoid arthritis to develop with a 100 U/ml?
The authors of the 2012 study report that a person with an RF level of 100 u/ml or higher may be up to 26 times more likely to develop rhe umatoid arthritis than a person with an RF level of under 25 u/ml.
Why is my RF high?
While high RF levels may indicate rheumatoid arthritis in many cases, this condition is not the only reason that a person might have high RF levels.
What is the normal RF level?
Some doctors define normal RF levels as 0–20 units per milliliter (u/ml) of blood. On the other hand, one 2012 study designated the upper limit of regular levels as 25 u/ml.
Why is a positive rheumatoid factor test used?
Today, a positive rheumatoid factor test is mostly used as a supportive tool to help doctors reach a diagnosis. Because rheumatoid factor may be present in other conditions, and in some healthy people, the test for it should be combined with other tools and criteria for it to be useful in diagnosis. A positive rheumatoid factor test is also used ...
What does it mean when a rheumatoid factor is detected early?
If rheumatoid factor is tested and symptoms are detected early, a diagnosis can be quickly reached. Early diagnosis means treatment can begin sooner, hence preventing further progression of joint damage, swelling and pain.
What Causes Rheumatoid Factor?
It is not exactly known what causes rheumatoid factor to develop in the blood. However, it is thought to be a combination of genetics and other external risk factors. The uncertainty may be because certain people have low levels of rheumatoid factor, which may not ever be enough to trigger a significant autoimmune response.
What Do Rheumatoid Factor Test Results Mean?
A positive for rheumatoid factor test results means that it can lead to or is the cause of inflammatory symptoms from an autoimmune disorder.
What is the name of the antibody that attacks a healthy tissue?
Rheumatoid factor is one of many antibodies that are known to attack healthy tissue through an autoimmune process. When triggered, rheumatoid factor antibodies attack the healthy tissue resulting in a variety of symptoms.
How does rheumatoid arthritis affect prognosis?
The disease affects different people in different ways. A prognosis can depend largely on the type and severity of symptoms the patient displays, as well as their medical history.
What happens when antibodies turn against the body?
In other words, the antibodies turn against the person’s body damaging their health in the process . When this occurs, the immune response that is triggered may result in what we now know as an autoimmune disorder. A variety of conditions have been shown to occur from these autoimmune responses. Rheumatoid factor is one of many antibodies ...
How to diagnose RA?
Rheumatoid arthritis (RA) is a chronic autoimmune disease that primarily affects the joints, but can affect other parts of the body. Diagnosing and managing RA involves clinical evaluation by a rheumatologist, as well as several different laboratory tests that require blood work. The results of these tests may be used in two ways: 1 To confirm the presence of the RA. 2 To determine how active the disease is.
Why do we need labs for RA?
Laboratory tests provide important information in the diagnosis, management and treatment of rheumatoid arthritis. By becoming informed about the normal values for tests, as well as their own numbers, patients with RA can better communicate with the health care team and gain a better understanding about some of the information that is used in developing and monitoring their treatment plans.
What is RF in RA?
Rheumatoid factor (RF) was the first autoantibody to be discovered in people with RA. (Autoantibodies develop in response to the body’s own tissue, and are characteristic of autoimmune diseases, such as RA.) Despite the name, however, RF is not specific to RA, and there are many factors that can impact RF lab results. About 20% of those with confirmed RA will not have an abnormal RF test, while 5% of people who do not have RA will have an abnormal RF test. Negative levels do not exclude the disease, and positive levels do not guarantee the diagnosis.
What is RA in a tooltip?
Tooltip, Inflammatory Arthritis, Rheumatoid Arthritis, Rheumatoid arthritis (RA) is a chronic autoimmune disease that primarily affects the joints, but can affect other parts of the body. Diagnosing and managing RA involves clinical evaluation by a rheumatologist, as well as several different laboratory tests that require blood work.
What is the normal range of RF?
Negative levels do not exclude the disease, and positive levels do not guarantee the diagnosis. The normal range of RF is from 0-20 IU/ml. RF above 20 IU/ml is not considered enough to diagnose RA, as there other reasons the RF level may be elevated. Some conditions and medical procedures that can raise RF levels include: other autoimmune diseases, ...
What is the normal C-reactive protein?
C-reactive protein is another measure of clinical inflammation. The normal measurement is less than 1.0 in many labs. This test, however, can be influenced by factors such as obesity and infection and is not specific to RA.
Why are anti-CCP and RF tests not used?
RF and anti-CCP are not used to monitor disease activity, because they both tend to remain positive despite remission. Once the diagnosis of RA has been made and confirmed, these tests are not repeated.
