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Rheumatoid Factor (RF) Blood Test

Type

Blood Testing

Biomarkers

3

Duration

30 min

Results

3 days

Blood test to detect rheumatoid factor (RF) antibodies, indicating potential autoimmune disorders like rheumatoid arthritis.

Rheumatoid arthritis is a long-term autoimmune condition affecting millions globally. It leads to pain, swelling, and deterioration of the joints. The rheumatoid factor biomarker test helps diagnose RA by quantifying RF antibodies in the bloodstream. Elevated levels can signal RA or other autoimmune conditions. However, high RF levels aren't always indicative of RA, and vice-versa. The RF test is most effective alongside clinical assessments.

Key Details

Biomarkers
2–10+ inflammation markers
Fasting Required
No
Sample Type
Blood draw
Turnaround
1–3 business days
Common Use
Inflammation screening, autoimmune detection

Who Is This For?

Anyone with unexplained joint pain, fatigue, or recurrent symptoms that could indicate autoimmune activity. People with a family history of autoimmune diseases (lupus, rheumatoid arthritis, Hashimoto's). Health-conscious individuals tracking inflammation as part of a longevity protocol. Those recovering from illness or injury who want to monitor their inflammatory response.

What's Included

High-sensitivity C-reactive protein (hsCRP)
Erythrocyte sedimentation rate (ESR)
Additional markers vary by panel (ANA, RF, cytokines)

Preparation Required

No fasting required for most inflammation markers. Avoid intense exercise for 24 hours before testing, as it temporarily elevates CRP and other inflammatory markers. Inform your provider of any acute illness, injury, or infection, as these will cause temporary elevations unrelated to chronic conditions.

Biomarkers Tested

3
Rheumatoid Factor (RF) titer

Autoantibody often elevated in inflammation, e.g., rheumatoid arthritis.

hs-CRP (High-Sensitivity C-Reactive Protein) mg/L

A highly sensitive test for low-grade chronic inflammation linked to cardiovascular disease risk. Lower hs-CRP values are associated with better cardiovascular outcomes.

ESR mm/hr

Erythrocyte sedimentation rate — measures how quickly red blood cells settle to the bottom of a test tube. Faster settling indicates more inflammation. ESR is a non-specific marker used to monitor inflammatory conditions like arthritis and vasculitis.

Price
£44.00 £55.00

Subscription plans offer discounts (up to 20% off)

Category
Diagnostic
Sample Type
Blood draw
Duration
30 min
Results
3 days
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Frequently Asked Questions