Rheumatoid Factor (IgG) Blood Test

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Feature	Labcorp	Quest Diagnostics
Price	Coming soon	$28.49
Results in	—	~5 business days
Sample type	—	Blood Serum
Require fasting	—	No

About the test

In conjunction with clinical findings and other laboratory tests, the presence of rheumatoid factor (RF) can be used to aid in the diagnosis of rheumatoid arthritis.

Included biomarkers & Reference ranges

Biomarker	Reference range
Rheumatoid Factor (IgG) Measures the IgG type of rheumatoid factor, an autoantibody that may add information when evaluating rheumatoid arthritis and related conditions.	—

Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.

Preparation

Overnight fasting is recommended but not required.
Fasting before a blood draw means you don't eat or drink anything except water.
Your doctor should provide any special instructions related to fasting for your test. Always follow your doctor's instructions.

How it works

1. Order online No referral or insurance
2. Get a requisition By email in 24–72 hours
3. Visit a draw center Bring a matching photo ID
4. Get results Securely by email

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Consultations

Not sure how to read your results? We can help.

Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.

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