Rheumatoid Factor (RF)

Antibody associated with rheumatoid arthritis

1/22Providers
Autoimmune MarkersCategory
<14 IU/mL, Weakly poReference

Limited Availability

1 providers include this

Category

Autoimmune Markers

Reference Range

<14 IU/mL, Weakly positive:14-40 IU/mL, Positive:>40 IU/mL

What is Rheumatoid Factor (RF)?

Antibody associated with rheumatoid arthritis

Why It Matters

Elevated in 70-80% of rheumatoid arthritis cases. Also positive in other autoimmune diseases. Used for diagnosis and prognosis.

Reference Range: <14 IU/mL, Weakly positive:14-40 IU/mL, Positive:>40 IU/mL

Which Providers Test Rheumatoid Factor (RF)?

Function
Included in panel

Full Provider Comparison

ProviderIncludesAnnual CostBiomarkers
SuperpowerSuperpower—$199100+ (150 with ratios)
WHOOP Advanced LabsWHOOP Advanced Labs—$34965
Labcorp OnDemandLabcorp OnDemand—$39830+
Life ExtensionLife Extension—$48640+
EverlywellEverlywell—$46883
Mito HealthMito Health—$349100+
InsideTrackerInsideTracker—$68054
Function HealthFunction Health✓$365100+
Marek Health BaseMarek Health Base—$25065
Marek Health ComprehensiveMarek Health Comprehensive—$49570+
Marek Health CompleteMarek Health Complete—$895100+
Marek Health ExecutiveMarek Health Executive—$1950150+
BlueprintBlueprint—$399100+
Quest HealthQuest Health—$Varies75+
Empirical HealthEmpirical Health—$190100+
Oura Health PanelsOura Health Panels—$9950
SiPhox HealthSiPhox Health—$12560
Hims Labs BaseHims Labs Base—$19950
Hims Labs AdvancedHims Labs Advanced—$499120+
HealthspanHealthspan—$418880+
Vitality Blueprint StandardVitality Blueprint Standard—$37585
Vitality Blueprint EliteVitality Blueprint Elite—$700129

Ready to Test Rheumatoid Factor (RF)?

1 providers include this biomarker in their panels

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Frequently Asked Questions

What does Rheumatoid Factor (RF) test for?
Rheumatoid Factor (RF) is a autoimmune markers biomarker. Antibody associated with rheumatoid arthritis The normal reference range is <14 IU/mL, Weakly positive:14-40 IU/mL, Positive:>40 IU/mL.
Which providers include Rheumatoid Factor (RF)?
1 of 22 providers include this test:Function.
How often should I test Rheumatoid Factor (RF)?
For most people, testing 2-4 times per year is recommended to establish baseline levels and track trends. Consult your healthcare provider for personalized recommendations.
What is the optimal range?
The standard reference range is <14 IU/mL, Weakly positive:14-40 IU/mL, Positive:>40 IU/mL. Many functional medicine practitioners recommend tighter optimal ranges for peak health. Your ideal range may vary based on age, sex, and health goals.
Why is Rheumatoid Factor (RF) important?
Elevated in 70-80% of rheumatoid arthritis cases. Also positive in other autoimmune diseases. Used for diagnosis and prognosis.

Medical Disclaimer

This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.