Immunology & Serology · Report Format
Rheumatoid Factor IgM Report Format — Sample & Free Download
A Rheumatoid Factor IgM test specifically measures the IgM isotype of rheumatoid factor — the classical antibody form most associated with rheumatoid arthritis — typically using a quantitative ELISA method for greater precision than a standard latex RA Factor test.
This is a real report generated by Dr.Lably LIS — not a mockup.
When is it ordered?
- Confirming or refining a positive latex-based RA Factor result with a more specific method
- Supporting a rheumatoid arthritis diagnosis alongside anti-CCP antibodies
- Investigating persistent joint symptoms when initial RA Factor testing was inconclusive
- Monitoring autoimmune disease activity over time
Test details
- Specimen type
- Serum
- Turnaround time
- Within 48 hours
Rheumatoid Factor IgM report format breakdown
| Parameter | Unit | Normal range | What it means |
|---|---|---|---|
| Rheumatoid Factor IgM | IU/mL | Negative | The IgM isotype is the classical rheumatoid factor associated with rheumatoid arthritis; a Negative result is interpreted alongside anti-CCP and clinical findings, since RF IgM can be negative in some rheumatoid arthritis patients (seronegative RA). |
Frequently asked questions
What does a Rheumatoid Factor IgM report format show?
The report lists a single Rheumatoid Factor IgM result with unit, reference range, and status, plus a clinical notes section — as shown in the sample report above.
Do I need to fast before this test?
No fasting or special preparation is needed for a Rheumatoid Factor IgM test.
Why test IgM specifically instead of total RA Factor?
The IgM isotype is the classical form most strongly associated with rheumatoid arthritis, so isolating it with a quantitative method can give a more specific result than a total RF latex test.
How long does a Rheumatoid Factor IgM report take?
Dr.Lably-powered labs typically report Rheumatoid Factor IgM results within about 48 hours of sample collection.
Related report formats
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This page is for informational purposes only and is not a substitute for professional medical advice or diagnosis. Reference ranges shown are illustrative and may vary by lab, analyzer, age, gender, and methodology — always interpret results with a qualified physician.