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Screens for rheumatoid factor antibodies associated with rheumatoid arthritis.
Also known as: Rheumatoid Factor, RF
Sample
Blood
Fasting
Not required
Report in
24 hours
Collection
Free at home
The RA Factor (Rheumatoid Factor) test detects an antibody that is often present in people with rheumatoid arthritis and some other autoimmune conditions. It’s commonly used to support the diagnosis and evaluation of joint pain and swelling.
Ordered to help investigate persistent joint pain, swelling or stiffness suggestive of rheumatoid arthritis, and sometimes to evaluate other autoimmune or chronic inflammatory conditions.
It can help your doctor assess
Rheumatoid arthritis and, less specifically, certain other autoimmune or chronic inflammatory/infectious conditions.
This test may be considered for:
Anyone with persistent joint pain, swelling or morning stiffness lasting more than a few weeks, especially if affecting multiple joints symmetrically.
Whether this test is right for you depends on your symptoms, medical history and the reason for testing - your doctor can advise.
The level of rheumatoid factor antibody in the blood.
Rheumatoid Factor
Autoimmune Marker
Positive in most people with rheumatoid arthritis, but can also be positive in some other conditions or even in healthy people, so it’s combined with symptoms and other tests (like anti-CCP) for diagnosis.
How to read your result
Your report should be read using the reference interval, unit and method shown by the performing laboratory. A result outside a reference interval does not automatically establish a diagnosis, and a result inside the interval does not rule out every health problem. Clinical interpretation depends on symptoms, history and other findings.
| Marker | Result | What it may be associated with |
|---|---|---|
| RA Factor | Positive/High | Supports a diagnosis of rheumatoid arthritis when combined with joint symptoms, but can also occur in other autoimmune conditions or a small percentage of healthy people. |
| RA Factor | Negative | Doesn’t rule out rheumatoid arthritis - some people with RA test negative ("seronegative" RA), so clinical evaluation remains important. |
If a result is outside the range
If the RA Factor (Rheumatoid Arthritis) is reported as high, low, positive, negative or otherwise outside the laboratory's stated interval, the meaning depends on the specific test and the reason it was ordered. Your clinician may consider repeat testing, related investigations or other clinical information before deciding what the result means.
Limitations of this test
RA Factor alone cannot confirm or rule out rheumatoid arthritis - it is one part of a clinical evaluation that includes symptoms, physical exam, and often the more specific anti-CCP antibody test.
An abnormal result does not by itself mean you have a particular disease. Your doctor interprets results together with your symptoms, history and other tests.
| Parameter | Reference range | Unit |
|---|---|---|
| RA Factor | Less than 14 | IU/mL |
Typical adult ranges for guidance. Reference intervals vary with the laboratory method, age and sex - always read your result against the range printed on your own report.
Book
Choose the test and a time slot online, or call us and we'll book it for you.
Prepare
Follow the preparation steps above for this test.
Sample collection
A trained phlebotomist collects the sample at your home - no extra charge.
Laboratory processing
Your sample is processed in our laboratory and reviewed by a pathologist.
Report
Your report is shared on WhatsApp and email, usually within 24 hours.
For a blood-based test, a small blood sample is collected by a trained healthcare professional, usually from a vein in the arm. The collection normally takes only a few minutes; mild temporary discomfort or bruising can occur at the puncture site.
Certain chronic infections, other autoimmune diseases, and even normal ageing can occasionally cause a positive result without rheumatoid arthritis being present.
Laboratory results are interpreted together with your symptoms, medical history and other investigations. If your results are significantly abnormal, or you have symptoms that worry you, discuss them with a qualified doctor promptly.
Trusted public health sources for the information on this page:
This information is for general awareness and does not replace advice from your doctor.
The RA Factor (Rheumatoid Arthritis) test cost in Mumbai at HWP Diagnostic is ₹549 - 42% less than the MRP of ₹949. There are no extra charges for home sample collection. The same price applies across Malad, Kandivali, Borivali and Goregaon.
| Test | RA Factor (Rheumatoid Arthritis) |
|---|---|
| Price at HWP Diagnostic | ₹549 |
| MRP | ₹949 (you save ₹400 - 42% off) |
| Home collection charge | Free |
| Report time | 24 hours |
| Fasting | Not required |
| Available in | Malad, Kandivali, Borivali & Goregaon (same price) |
Book the RA Factor (Rheumatoid Arthritis) test with free home sample collection anywhere in Malad, Kandivali, Borivali and Goregaon, or walk in to our lab in Malad West, Mumbai - open 24×7.
Home collection areas include
Malad WestMalwani & KharodiMalad EastKandivali WestKandivali EastBorivali WestGorai & Borivali WestIC Colony & MandapeshwarBorivali EastGoregaon WestBangur Nagar & Motilal NagarGoregaon EastAarey ColonyDahisarJogeshwari WestJogeshwari East
Directions on Google MapsIt is also known as Rheumatoid Factor, RF.
Home collection at the same price (₹549) across these areas, with our lab in Malad West open 24×7.
Get this test along with other important checks - usually for less than booking them separately.
No fasting is required for this test.
Not necessarily. A positive result supports the diagnosis when combined with joint symptoms, but it can also occur in other conditions or in some healthy people - your doctor will interpret it alongside your clinical picture.
Yes, some people with rheumatoid arthritis test negative for RA Factor ("seronegative"). Your doctor may order additional tests like anti-CCP if RA is still suspected clinically.
Anti-CCP antibody, ESR and CRP are commonly ordered together to build a fuller picture of possible rheumatoid arthritis or inflammatory joint disease.
RA Factor (Rheumatoid Arthritis) is a blood test. Screens for rheumatoid factor antibodies associated with rheumatoid arthritis.
The RA Factor (Rheumatoid Arthritis) may be ordered when a healthcare professional needs information about the condition or health area assessed by this test. RA Factor is an antibody often raised in rheumatoid arthritis and some other conditions. It is a helpful first step when joint pain, stiffness or swelling needs investigating.
Screens for rheumatoid factor antibodies associated with rheumatoid arthritis.
The test may be relevant for people whose symptoms, medical history, screening needs or treatment monitoring match the purpose of the RA Factor (Rheumatoid Arthritis).
No fasting required.
No, fasting is not required for the RA Factor (Rheumatoid Arthritis). You can eat and drink normally unless your doctor has advised otherwise.
The RA Factor (Rheumatoid Arthritis) is done on a blood sample.
For a blood-based test, a small blood sample is collected by a trained healthcare professional, usually from a vein in the arm. The collection normally takes only a few minutes; mild temporary discomfort or bruising can occur at the puncture site.
Reports for the RA Factor (Rheumatoid Arthritis) are usually ready within 24 hours of sample collection. You receive them on WhatsApp and email.
The RA Factor (Rheumatoid Arthritis) costs Rs 349 at HWP Diagnostic (MRP Rs 600). Home sample collection is free.
Your report should be read using the reference interval, unit and method shown by the performing laboratory. A result outside a reference interval does not automatically establish a diagnosis, and a result inside the interval does not rule out every health problem. Clinical interpretation depends on symptoms, history and other findings.
If the RA Factor (Rheumatoid Arthritis) is reported as high, low, positive, negative or otherwise outside the laboratory's stated interval, the meaning depends on the specific test and the reason it was ordered. Your clinician may consider repeat testing, related investigations or other clinical information before deciding what the result means.
The RA Factor (Rheumatoid Arthritis) can provide important information, but laboratory results are generally interpreted together with symptoms, medical history, examination and other investigations. A single result should not be treated as a diagnosis without clinical context.
Some medicines, supplements, food, exercise and other pre-test factors can affect particular laboratory results. Tell the healthcare professional about medicines and supplements you take, and do not stop prescribed medicines unless your clinician tells you to.
Yes. Free home sample collection for the RA Factor (Rheumatoid Arthritis) is available across Malad, Kandivali, Borivali and Goregaon in Mumbai. You can also visit our Malad West lab, open 24x7.