Measures rheumatoid factor antibody used in arthritis and autoimmune evaluation.
Download Rheumatoid Factor (rf) Test Visual Guide infographic (PNG)
| Result context | Guide |
|---|---|
| Negative | below lab cut-off |
| Positive | autoimmune context |
| High | needs clinical review |
RF can be positive in conditions other than rheumatoid arthritis.
Rheumatoid Factor (rf) is a laboratory test. Looks for RF autoantibodies.
Your clinician can advise whether this test is appropriate for you. The result should be read with the laboratory range, symptoms, medical history and other relevant results. The listed sample type is Blood (Serum).
A routine blood draw is low risk. You may feel a brief sting when the needle goes in, and some people notice temporary bruising, soreness or light-headedness afterwards. Fainting and infection are uncommon. The sample is collected at your home by a trained phlebotomist using sterile equipment, and the draw takes only a few minutes. If you feel unwell during or after collection, tell the phlebotomist or speak to your doctor.
Reference ranges vary by laboratory and method. Use the range printed on your final report. The information below is educational only.
| Measure | Typical guide | Note |
|---|---|---|
| Result format | Negative or below lab cut-off | Normal cut-offs vary by lab. |
| Positive RF | Above lab cut-off | May support rheumatoid arthritis but is not specific. |
| False positives | Can occur | May appear in other autoimmune, infection or ageing contexts. |
| Reason | Description |
|---|---|
| Arthritis support | Looks for RF autoantibodies. |
| Diagnosis support | Used with symptoms and anti-CCP. |
| Monitoring context | May support autoimmune disease evaluation. |
| Situation | Description |
|---|---|
| Symptoms | Joint pain, swelling, stiffness, morning stiffness, fatigue. |
| Risk context | Possible rheumatoid arthritis or autoimmune disease symptoms. |
| Follow-up users | People with positive ANA/ESR/CRP or persistent joint symptoms. |
| Topic | Guidance |
|---|---|
| Fasting | No fasting is required for this test alone. If another test in the same order requires fasting, follow its preparation instructions. |
| Pairing | Often ordered with anti-CCP, ESR and CRP. |
| Interpretation | RF alone cannot diagnose rheumatoid arthritis. |
The current Rheumatoid Factor (rf) price in Mysore is Rs. 608. The final booking details are shown before you confirm.
No fasting is required for this test alone. If another test in the same order requires fasting, follow its preparation instructions.
Select Add to Cart or Book Now, choose a suitable slot and provide your address and pincode. Home collection is available where serviceable.
Payment is made after sample collection. Review the final booking amount before confirming your order; the collection team can confirm the available payment methods.
Your report shows the laboratory reference range. A doctor can interpret the result together with your symptoms, medical history and other tests.
Thyrocare states that most test reports are available within 24–48 hours after the sample reaches the laboratory, depending on the test. This is a general estimate, not a guaranteed turnaround for this test; sample transport time is additional. Completed reports are shared digitally.
Free Home Sample Collection in Mysore
Coverage for home collection
Popular neighbourhoods include Mandi Mohalla · Gokulam · Kuvempu Nagara · Rajendra Nagar · Ramachandra Agrahara · Mahadeshwara Badavane Layout · Siddhartha Layout · Bettadpura · Chamrajpura · Hebbal · Hebbal 1st Stage · Jp Nagar · Krishnamurthy Puram · Rajarajeshwari Nagar · Sayyaji Rao Rd · Vani Vilas Mohalla · Vontikoppal · Yadavagiri · Yaraganahalli · Ashokapura. Enter your pincode to confirm home collection.