Why are ESR and hs-CRP tested together in an inflammation panel?

These two tests have complementary response patterns - CRP rises quickly within hours of inflammation and normalizes within days, while ESR increases slowly and stays elevated longer. Testing both provides a more complete picture of both acute and chronic inflammatory processes than either test alone.

Can this panel diagnose specific autoimmune diseases?

An inflammation panel cannot diagnose a specific condition - it shows if inflammation is present but can't identify the source or cause. Elevated results indicate the need for additional specialized tests to determine the underlying condition causing the inflammation.

How often should someone with chronic inflammation be tested?

For individuals with chronic conditions requiring ongoing treatment, these inflammatory markers should be repeated every 1 to 3 months to help determine whether treatment is effectively reducing inflammation. Your healthcare provider can determine the appropriate testing frequency based on your specific situation.

What medications or conditions can affect these test results?

Various medications can affect results - birth control pills, methyldopa, theophylline, and vitamin A can increase ESR, while aspirin, quinine, and steroids can lower ESR. Nonsteroidal anti-inflammatory drugs (NSAIDs) and statins can reduce CRP levels. Pregnancy, age, and recent illness can also influence results.

Is fasting required for the inflammation panel?

No fasting is required for ESR testing - you can eat, drink, and take medications normally. For hs-CRP, fasting is only needed if a lipid profile is being tested at the same time. For most inflammation assessments, no dietary restrictions are necessary.

Can this panel detect early signs of heart disease?

Chronic inflammation is important in heart disease, and elevated hs-CRP can be a marker of atherosclerosis and predictor of cardiovascular events including heart attack, stroke, and peripheral vascular disease in individuals without a history of heart disease. However, this panel should be part of a comprehensive cardiovascular risk assessment.

Autoimmune & Inflammation

Inflammation Panel (ESR + hs-CRP)

A comprehensive blood panel that measures two key markers of inflammation: erythrocyte sedimentation rate (ESR) and high-sensitivity C-reactive protein (hs-CRP).

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What this test measures

An inflammation panel combines two widely used laboratory tests that detect inflammatory activity in the body: erythrocyte sedimentation rate (ESR) and high-sensitivity C-reactive protein (hs-CRP). ESR measures how quickly red blood cells (erythrocytes) fall to the bottom of a vertical tube over one hour. During inflammation, red blood cells stick together in clumps that are heavier than single cells, causing them to sink faster. hs-CRP measures the level of C-reactive protein: a protein made by the liver: that is released into the bloodstream in response to inflammation.

These two tests have different response patterns, making them complementary markers. CRP rises within hours of inflammation onset and returns to normal within three to seven days if the inflammatory process resolves. ESR increases more slowly and remains elevated for a longer period of time. Because these markers are nonspecific, the tests are not diagnostic for any particular condition, but they may help identify a generalized state of inflammation along with other tests and aid in the differential diagnosis. Together, they provide a more comprehensive picture of inflammatory status than either test alone.

What's included

Erythrocyte Sedimentation Rate (ESR)

High-Sensitivity C-Reactive Protein (hs-CRP)

Who should consider this test

You might consider this test if you are experiencing any of the following:

Individuals experiencing unexplained symptoms such as persistent fatigue, fever, or joint pain that may indicate inflammation
Those with suspected autoimmune conditions like rheumatoid arthritis, lupus, or inflammatory bowel disease requiring inflammatory marker assessment
Patients with chronic conditions who need regular monitoring of inflammation levels to track disease progression or treatment effectiveness
Individuals undergoing evaluation for cardiovascular risk, as elevated hs-CRP may indicate increased risk of heart disease
People with a family history of autoimmune disorders who want to screen for early signs of inflammatory conditions
Those recovering from surgery or infections who need monitoring for ongoing inflammatory responses

What to expect

Preparation

No special preparation is needed for this test. Individuals can eat, drink fluids, and take usual medications and supplements. However, for most accurate results, it may be recommended to avoid acute illness, recent injury, or infection when testing, as these can temporarily elevate inflammatory markers.

Sample Type

A blood sample is collected from a vein in the arm using a standard blood draw procedure.

Collection

The blood collection typically takes less than five minutes. A healthcare professional will insert a small needle into a vein in the arm to collect the sample. Some individuals may experience minor discomfort, bruising, or tenderness at the needle site.

Turnaround

Results are typically available within one to two days, though turnaround times may vary by laboratory.

Understanding your results

How quickly red blood cells fall to the bottom of the test tube indicates the level of inflammation present: faster ESR rates typically mean higher levels of inflammation. However, an ESR test alone cannot diagnose which condition is causing the inflammation. Elevated hs-CRP levels are recognized as predictors of cardiovascular events, while CRP greater than 10.0 mg/L is indicative of acute inflammation. Both tests should be interpreted together and in the context of symptoms and medical history.

Population	Reference Range	Notes
Adult Males (under 50)	0-15 mm/hr (ESR)	Normal ESR range for men under 50 years of age
Adult Females (under 50)	0-20 mm/hr (ESR)	Normal ESR range for women under 50 years of age
All Adults	Less than 0.9 mg/dL (CRP)	General normal range for C-reactive protein
hs-CRP Cardiovascular Risk	Low risk: <1.0 mg/L, Moderate: 1.0-3.0 mg/L, High: >3.0 mg/L	hs-CRP ranges for cardiovascular disease risk assessment

Reference ranges shown are general guidelines. Your lab report will include the specific reference range used by the laboratory that processed your sample, which is the authoritative range for interpreting your results.

What does a “Low” result mean?

Low ESR may be associated with polycythemia, hyperviscosity, sickle cell anemia, leukemia, chronic fatigue syndrome, low plasma protein (due to liver or kidney disease) and congestive heart failure. Low ESR results may also indicate conditions such as sickle cell disease, polycythemia, heart failure, and kidney problems. Low CRP levels typically indicate minimal inflammation and are generally considered favorable, particularly for cardiovascular risk assessment. However, very low levels should be interpreted in the clinical context, as some conditions may prevent normal inflammatory responses.

What does a “High” result mean?

Elevated ESR may be associated with inflammation, pregnancy, anemia, autoimmune disorders (such as rheumatoid arthritis and lupus), infections, some kidney diseases and some cancers (such as lymphoma and multiple myeloma). ESR values greater than 100 mm/hour may indicate conditions requiring further investigation. Moderately to severely elevated CRP levels may be a sign of serious infection or other inflammatory conditions, including severe bacterial infections such as sepsis. High hs-CRP levels may also suggest increased cardiovascular risk and chronic low-grade inflammation. It's important to note that elevated levels require additional testing to determine the underlying cause.

Privacy & confidentiality

All test orders are authorized and results reviewed by an independent, board-certified physician who is not the patient's personal doctor. At LevelPanel, we understand that health information is deeply personal and private. Your inflammation panel results are completely confidential and are not reported to your doctor unless you choose to share them. The test results are not part of your medical records and will not appear on insurance statements or explanation of benefits (EOB). We do not share your information with employers, insurers, or any third parties without your explicit consent. Your health data belongs to you, and we are committed to keeping it private and secure. You have complete control over who has access to your results, giving you the freedom to make informed decisions about your health on your own terms.

Frequently asked questions

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CPT Code: 85652, 86141

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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