Autoimmune
Rheumatoid Factor test cost — $4.80–$22
Rheumatoid Factor · measured in IU/mL
RA-associated antibody — ideally undetectable.
Lower is betterReference range
An assay-specific reference interval has not yet been added to this guide.
Use the interval printed beside this exact result, including its specimen, units, age/sex group and collection conditions. A range for a similarly named test may not apply.
Optimal range / clinical target
PeptideLab has not verified a separate ‘optimal’ target for this measurement. Reference intervals, diagnostic cutoffs and treatment targets answer different questions.
Rheumatoid Factor test prices
Compare direct-pay test prices, without using insurance. Test prices are shown before separate collection fees.
Tracking more than one biomarker?
Build a list to compare test and panel combinations, with one blood-draw fee in your GoodLabs estimate.
$12 blood draw per visit, added once to your order.
Collection fee is additional; not included in this test price.
* Estimated test price.
Does insurance cover Rheumatoid Factor testing?
When a clinician orders Rheumatoid Factor for a diagnosis or to follow a known condition, most plans cover it — and many cover routine screening as $0 preventive care for eligible adults. The catch is you need a qualifying reason and an in-network order; a “I just want to see my number” request often isn’t covered, and if you haven’t met your deductible you can end up paying the lab’s full list price anyway.
The direct-pay prices above skip insurance entirely: you pay the cash price, test on your own schedule with no doctor visit, and it’s HSA/FSA-eligible. For a single marker that’s often cheaper — and faster — than a copay plus deductible exposure.
Rheumatoid Factor inside a bundle
Every compared membership/panel that includes Rheumatoid Factor, cheapest first. Worth it when you want several markers at once rather than a single test.
| Provider | Model | Advertised panel | Price |
|---|---|---|---|
| Superpower | Annual membership | 103+ 73 biomarkers mapped | $199/yr |
| Hundred | Annual membership | 160+ 74 biomarkers mapped | $199/yr |
| Function Health | Annual membership | 160+ 88 biomarkers mapped | $365/yr |
| Blueprint (Bryan Johnson) | Annual membership | 160+ 88 biomarkers mapped | $365/yr |
| HealthieOne | One-time test | 250+ 50 biomarkers mapped | $420/test + draw |
What Rheumatoid Factor is
An autoantibody (usually IgM) against the Fc portion of IgG. It supports a rheumatoid arthritis diagnosis but also appears in other autoimmune and infectious states and some healthy elderly.
Why it matters for longevity & performance
Elevated RF signals autoimmune inflammatory burden (rheumatoid arthritis raises cardiovascular risk); anti-CCP is more specific for RA.
Rheumatoid Factor testing — frequently asked
Do I need to fast for a Rheumatoid Factor test?
No. Rheumatoid Factor does not require fasting — you can test any time of day.
Do I need a doctor's order to get a Rheumatoid Factor test?
No. Direct-to-consumer labs (GoodLabs, Ulta, Quest and Labcorp OnDemand) include the physician order in the price — you order online and visit a draw site, no appointment with your own doctor needed.
How fast are Rheumatoid Factor results?
Usually 1–3 business days after your blood draw; most results post to the lab's online portal.
What's the difference between the standard and optimal Rheumatoid Factor range?
Reference intervals describe results in a reference population; they do not by themselves diagnose or exclude disease. A treatment target depends on the condition and the person. PeptideLab has not verified a separate ‘optimal’ target for this measurement. Reference intervals, diagnostic cutoffs and treatment targets answer different questions.
Does insurance cover Rheumatoid Factor testing?
Often, when ordered for a diagnosis; many plans cover it as preventive care at no cost for eligible adults. The direct-pay prices above let you skip insurance and test on your own schedule.
Related Autoimmune biomarkers
Educational guidance. Use your reporting lab’s reference interval and discuss personal targets and results with your clinician.