Inflammation Panel (Comprehensive)
A comprehensive panel that measures multiple inflammatory and autoimmune markers including CRP, ESR, ANA, rheumatoid factor, complement proteins C3/C4, and complete blood count to evaluate systemic inflammation and autoimmune activity.
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LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
What this test measures
This panel evaluates inflammation and immune system function through six complementary tests: C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), antinuclear antibodies (ANA), rheumatoid factor (RF), complement proteins C3 and C4, and a complete blood count (CBC). Each test captures a different dimension of the inflammatory and immune response.
CRP rises rapidly in response to acute inflammation or tissue injury, while ESR provides a slower-moving, longer-term view of inflammatory burden. ANA screens for antibodies directed against the body's own cell nuclei, a pattern associated with lupus and other connective tissue diseases. RF detects antibodies linked to rheumatoid arthritis and related conditions. Complement C3 and C4 levels reveal whether the immune system's complement cascade is being consumed, which often occurs in active autoimmune disease. The CBC evaluates white blood cell counts and differentials that can indicate infection, immune activation, or bone marrow involvement. Together, the panel provides a broad initial assessment of whether significant inflammation or autoimmune activity is present.
What's included
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Individuals experiencing persistent joint pain, stiffness, or swelling lasting more than six weeks, particularly those with morning stiffness that improves throughout the day.
- Those with unexplained fatigue, muscle weakness, or flu-like symptoms that persist despite adequate rest and may suggest systemic inflammatory conditions.
- People with a family history of autoimmune diseases such as rheumatoid arthritis, lupus, or other connective tissue disorders who want to assess their risk.
- Individuals with skin rashes, particularly those affecting the face or sun-exposed areas, which may indicate autoimmune conditions like lupus.
- Those experiencing fever of unknown origin, recurrent infections, or other signs that may suggest immune system dysfunction requiring comprehensive evaluation.
- People already diagnosed with autoimmune conditions who need monitoring of disease activity and treatment effectiveness through inflammatory marker assessment.
What to expect
Preparation
No fasting is required for this panel. Continue taking prescribed medications as usual unless specifically instructed otherwise by your healthcare provider. Avoid anti-inflammatory medications 24-48 hours before testing if possible, as they may affect CRP levels.
Sample Type
A healthcare professional will collect approximately 10-15 milliliters of blood from a vein in your arm using a standard needle. The collection process typically takes less than 5 minutes.
Collection
At the lab location, you will be asked to provide identification and complete any necessary paperwork. A trained phlebotomist will clean the puncture site, insert a small needle into your arm, and collect the blood sample into multiple tubes for the various tests included in this panel.
Turnaround
Results are typically available within 2-4 business days. You will receive your comprehensive report electronically, and no doctor visit is required to access your results.
Understanding your results
The strength of this panel lies in pattern recognition across its six components. Healthcare providers rarely interpret any single inflammatory marker in isolation; instead, they look for constellations of findings that point toward specific categories of disease. Elevated CRP and ESR with a positive ANA, for example, raises different diagnostic considerations than elevated CRP with low complement and a normal ANA. None of these markers is specific to a single condition, which means positive results typically prompt further targeted testing to identify the underlying cause. Results are evaluated in the context of symptoms, physical examination, and medical history.
| Population | Reference Range | Notes |
|---|---|---|
| Adults | CRP: <3.0 mg/L | Mild elevations 3-10 mg/L may indicate low-grade inflammation |
| Adults | ESR: 0-20 mm/hr (men), 0-30 mm/hr (women) | Normal values may vary based on age, with higher ranges for older adults |
| Adults | ANA: Negative or <1:80 | Values >3 U are strongly associated with systemic rheumatic diseases |
| Adults | RF: <14 IU/mL | RF achieves 95-96% specificity for rheumatoid arthritis diagnosis |
| Adults | C3: 90-180 mg/dL, C4: 10-40 mg/dL | Low levels below 60 for C3 and 15 for C4 may indicate active lupus |
| Adult Men | WBC: 4,500-11,000 cells/µL, RBC: 4.5-5.9 million/µL | Hemoglobin 14-17.5 g/dL, Hematocrit 41.5-50.4% |
| Adult Women | WBC: 4,500-11,000 cells/µL, RBC: 4.1-5.1 million/µL | Hemoglobin 12.3-15.3 g/dL, Hematocrit 35.9-44.6% |
Reference ranges may vary by laboratory and individual factors. Results should be interpreted by a healthcare provider in the context of your overall health.
What does a “Low” result mean?
Low complement C3 and C4 levels typically occur in active lupus, especially when the kidneys are affected or there is immune breakdown of blood cells. Low white blood cell counts may indicate autoimmune disorders, bone marrow suppression, or viral infections. Lymphocytopenia may occur with autoimmune diseases like lupus, rheumatoid arthritis, or Sjögren syndrome. Low hemoglobin or red blood cell counts typically indicate anemia, which may be associated with chronic inflammatory conditions.
What does a “High” result mean?
Elevated CRP levels (10-100 mg/L) typically accompany active autoimmune conditions like rheumatoid arthritis or inflammatory bowel disease. High ESR levels often indicate chronic inflammation and may suggest rheumatoid arthritis, lupus, or other systemic inflammatory conditions. A positive ANA test may indicate autoimmune diseases, though healthy individuals can occasionally test positive at low levels. Elevated rheumatoid factor levels are associated with more aggressive arthritis and extra-articular manifestations. High white blood cell counts may suggest infection, inflammation, or autoimmune activity requiring further evaluation.
Privacy & confidentiality
Your inflammation panel results are completely confidential and protected under HIPAA regulations. Results are not shared with your personal physician unless you choose to do so, are not added to your permanent medical record, and will not appear on insurance statements or explanations of benefits.
Frequently asked questions
Related tests
C-Reactive Protein (CRP)
Individual CRP testing for focused inflammatory marker assessment
View TestAntinuclear Antibodies (ANA)
Standalone ANA testing for autoimmune disease screening
View TestRheumatoid Factor
Specific rheumatoid arthritis marker evaluation
View TestESR + CRP Panel
Basic inflammation markers without autoimmune testing
View TestRelated conditions
Last reviewed: April 2026
CPT Code: 86140, 85652, 86038, 86430, 86160, 86161, 85025
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
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