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What a high WBC count typically signals, how the differential narrows interpretation, and which patterns warrant prompt clinical evaluation.
Elevated monocytes on a CBC often reflect infection, inflammation, or immune system activation. Here is what the research shows about causes and what affects levels.
How to interpret CRP and hs-CRP results — from normal ranges to elevated readings and what they may signal about your health.
Understanding white blood cell count ranges — what's mildly elevated, what's significantly high, and what clinical patterns prompt hospitalization.
A guide to how Epstein-Barr virus is clinically managed, what supports immune recovery, and which biomarkers provide useful information during and after infection.
What ESR and CRP each measure, when clinicians order each, and how to interpret results when only one is elevated.
PLR helps translate CBC data into actionable inflammation insight.
What CAR measures, why CRP and albumin move in opposite directions during stress, and how to read your combined score.
Understand monocytes' role in defense repair and cardiometabolic risk.
Use LMR to spot immune balance and inflammatory stress patterns over time.
What ESR measures, why it lags behind CRP, how anemia can raise it without inflammation, and how to read your result.
What CCP antibodies measure, how to read a positive or negative result, and which companion tests complete the RA evaluation.
What basophils measure, why they rise in allergy and myeloproliferative conditions, and which companion markers clarify an elevated count.
What the CRP-to-lymphocyte ratio measures, why CRP and lymphocytes move together during immune stress, and how to interpret your result.
What anti-dsDNA antibodies measure, why high titers are most specific for lupus, and how assay choice affects interpretation.
What total WBC measures, how the differential fills the gap, and what inflammation markers to test alongside it.
Learn what neutrophil trends say about acute immune activity.
One number that summarizes inflammatory stress and recovery capacity.
A fast way to gauge inflammatory balance and recovery.
A single ratio that summarizes inflammatory load across systems.
A three-cell index that measures the balance between systemic inflammation and immune regulation.
Learn what RF testing adds to the autoimmune picture and why trends matter.
A simple composite to interpret immune-thrombotic balance.
Track MLR to monitor immune balance and chronic stress.
See how lymphocytes map immune readiness and resilience.
What eosinophils measure, why the absolute count matters more than the percentage, and what high or low results signal.
What a positive ANA test means, how it detects autoimmune activity, when it warrants further testing, and which patterns guide clinical interpretation
What the celiac comprehensive panel measures, how to read positive and negative results, and which companion tests reveal the downstream effects.
Learn how hs-CRP connects inflammation with longevity and recovery.
The arachidonic acid pathway is a series of enzymatic reactions that convert arachidonic acid, an omega-6 polyunsaturated fatty acid, into powerful signaling molecules called eicosanoids. These eicosanoids, including prostaglandins, thromboxanes, and leukotrienes, play central roles in regulating inflammation, immune responses, and tissue repair throughout the body. Measuring markers related to this pathway, such as the AA/EPA ratio, may help you understand your body's inflammatory balance and guide dietary or lifestyle adjustments.
Anti–double-stranded DNA antibodies are immune proteins that bind the body’s own DNA. They are autoantibodies (anti‑dsDNA) produced by B cells that have lost self‑tolerance, often after nuclear material from dying cells is exposed. These antibodies circulate in the blood and recognize native double‑stranded DNA (dsDNA) from the cell nucleus. Available at 2,000+ lab locations and at-home (select states). See FAQs below
White blood cells are the body’s mobile defenders. A white blood cell (WBC) blood test measures the total number of these immune cells circulating in your bloodstream at a given moment. White blood cells (leukocytes) are made in the bone marrow from blood‑forming stem cells (hematopoietic stem cells) and released into the blood and lymph. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The systemic inflammation response index (SIRI) is a calculated marker made from routine white blood cell counts in a standard blood draw. It combines information from three key immune cell types—neutrophils, monocytes, and lymphocytes—to create a single number that represents the body’s overall inflammatory state. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The systemic immune-inflammation index (SII) is a composite blood marker that blends information from three circulating cell types: neutrophils, lymphocytes, and platelets. All three are born in the bone marrow and constantly patrol the bloodstream. Neutrophils are front-line defenders (innate immune cells), lymphocytes coordinate targeted defense and memory (adaptive immune cells), and platelets (thrombocytes) help with clotting and signal at sites of injury. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Rheumatoid factor (RF) is an autoantibody that targets other antibodies—most commonly an IgM antibody that recognizes the tail end of IgG (the Fc portion). It is produced by B cells that mature into antibody‑secreting plasma cells in lymph nodes, bone marrow, and inflamed joint lining (synovium), and it circulates in the bloodstream where it can be measured on a blood test. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The platelet-to-WBC ratio is a simple index calculated from a standard blood count that compares the number of platelets to the number of white blood cells. Platelets (thrombocytes) are small cell fragments released from megakaryocytes in the bone marrow and circulate to help prevent bleeding. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The platelet-to-lymphocyte ratio (PLR) is a derived biomarker calculated from a routine blood count. It compares the number of platelets to the number of lymphocytes circulating in your blood. Platelets (thrombocytes) are small cell fragments made in the bone marrow from megakaryocytes, ready to plug leaks and release inflammatory signals. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Neutrophils are the most abundant front-line white blood cells, made in the bone marrow from the myeloid lineage (granulocytes, polymorphonuclear leukocytes). Packed with microbe‑killing granules, they circulate briefly in the blood before moving into tissues. A neutrophils blood test measures how many of these cells are present in your bloodstream at that moment, capturing the circulating pool available for rapid defense (absolute neutrophil count, ANC) and their proportion among white cells (neutrophil fraction). Available at 2,000+ lab locations and at-home (select states). See FAQs below
The neutrophil-to-lymphocyte ratio (NLR) is a simple calculation from a routine blood sample that compares two white blood cell populations. Neutrophils are rapid-response defenders made in the bone marrow that patrol the bloodstream and tissues for microbes and injury (innate immunity, granulocytes). Available at 2,000+ lab locations and at-home (select states). See FAQs below
The neutrophil-to-lymphocyte & platelet ratio (NLPR) is a composite number derived from a standard complete blood count. It combines three cell types that circulate in your blood: neutrophils (innate immune granulocytes), lymphocytes (adaptive immune T and B cells), and platelets (thrombocytes involved in clotting). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Monocytes blood testing assesses the level of monocytes in your circulating blood. Monocytes are a type of white blood cell (leukocyte) produced in the bone marrow (hematopoietic marrow). They travel in the bloodstream for a short time, then migrate into tissues where they mature into macrophages and dendritic cells (antigen-presenting cells). Available at 2,000+ lab locations and at-home (select states). See FAQs below
The monocyte-to-lymphocyte ratio (MLR) is a simple number that compares two types of white blood cells in your bloodstream. It comes from the counts of monocytes and lymphocytes measured in a routine blood test. Both cell types are made in the bone marrow (hematopoietic stem cells) and circulate in peripheral blood. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Lymphocytes blood testing measures how many lymphocytes are circulating in your blood. Lymphocytes are a major type of white blood cell born in the bone marrow from blood-forming stem cells (hematopoietic stem cells). They include B cells, T cells, and natural killer cells (B lymphocytes, T lymphocytes, NK cells). Available at 2,000+ lab locations and at-home (select states). See FAQs below
The lymphocyte-to-monocyte ratio (LMR) is a simple snapshot of immune balance in the bloodstream. It compares the number of lymphocytes to the number of monocytes, both types of white blood cells (leukocytes) measured on a standard differential count. Lymphocytes are the targeted, memory-building cells of the immune system (T cells, B cells, and natural killer cells), born in the bone marrow and maturing in lymphoid organs such as the thymus and lymph nodes. Available at 2,000+ lab locations and at-home (select states). See FAQs below
High-sensitivity C-reactive protein (hs-CRP) blood testing measures the amount of C-reactive protein circulating in your bloodstream. CRP is a protein made in the liver (hepatocytes) when the immune system sends inflammatory signals, especially interleukin‑6. It is part of the acute-phase response, the body’s rapid, coordinated reaction to injury or infection. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Erythrocyte sedimentation rate (ESR) is a blood test index that reflects how readily red blood cells (erythrocytes) settle within the liquid part of blood (plasma). It is driven by the mix of proteins in plasma, especially those released by the liver and immune system during stress or illness (fibrinogen, immunoglobulins, complement). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Eosinophils are a specialized type of white blood cell (granulocytic leukocytes) made in the bone marrow. After maturing, they pass through the bloodstream briefly before settling in tissues, especially the gut, lungs, and skin. An eosinophil blood test measures how many of these cells are circulating at a given moment. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The Celiac Disease Comprehensive Panel gauges whether your immune system is mounting an autoimmune response to gluten that damages the small intestine. By measuring celiac‑specific antibodies (such as tissue transglutaminase and endomysial) alongside total IgA, it connects gut integrity with nutrient absorption, blood health, bone strength, skin, nerves, and even fertility and growth. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The CRP-to-lymphocyte ratio (CLR) is a composite blood marker built from two routine measures: C‑reactive protein and the circulating lymphocyte count. CRP is a soluble protein made by the liver (hepatocytes) when pro‑inflammatory cytokines, especially interleukin‑6, trigger the acute-phase response. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The CRP/albumin ratio (CAR) is a blood test calculation that compares two liver-made blood proteins. C-reactive protein (CRP) is released by the liver when the immune system detects inflammation or tissue damage. Serum albumin (albumin) is the most abundant protein in the bloodstream, produced by liver cells and responsible for maintaining fluid balance and carrying hormones, fatty acids, and drugs. Available at 2,000+ lab locations and at-home (select states). See FAQs below
CCP antibody blood testing looks for antibodies your immune system makes against small protein fragments called cyclic citrullinated peptides. These peptides appear when an enzyme changes one protein building block (arginine) into citrulline during inflammation (citrullination by peptidylarginine deiminase, PAD). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Basophils blood testing looks at a rare class of white blood cell called the basophil. Basophils form in the bone marrow and circulate in the bloodstream with granules packed with fast-acting chemical signals (granulocyte; histamine, heparin, leukotrienes). The test simply measures how many basophils are present in your blood at a given time (basophil count/percentage), offering a window into this small but potent immune cell population. Available at 2,000+ lab locations and at-home (select states). See FAQs below
ANA stands for antinuclear antibodies—antibodies that target molecules inside the cell nucleus. They are not a single substance but a family of self‑reactive antibodies made by immune B cells when tolerance to the body’s own tissues slips. These antibodies circulate in the bloodstream and can bind DNA, histones, and nuclear proteins (nuclear antigens). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Blood testing clarifies inflammation and organ involvement in systemic lupus erythematosus, guiding diagnosis and activity monitoring. Superpower provides WBC, platelets, hemoglobin, ESR, and CRP testing—blood counts and acute-phase reactants—in-clinic or at home. Home testing for SLE is available in selected states. (See FAQs below for more info).
Smoking drives low-grade systemic inflammation that strains vessels, lungs, and immunity. Blood testing reveals this burden early. At Superpower, we measure hs-CRP, white blood cell count (WBC), and neutrophil‑to‑lymphocyte ratio (NLR). We offer in-clinic and at-home testing; home kits currently available in selected states. (See FAQs below for more info).
Sepsis is a life‑threatening dysregulated host response to infection; timely blood biomarkers help detect it early and gauge severity. Superpower offers WBC, neutrophils, CRP, NLR, and SII testing for sepsis, with in‑clinic and at‑home options. Home testing is available in selected states. (See FAQs below for more info).
Detecting SIRS (systemic inflammatory response syndrome) early through blood testing clarifies systemic inflammation and immune activation. At Superpower, we measure WBC, neutrophils, CRP, NLR, PLR, and SIRI for SIRS assessment. We offer in-clinic and at-home testing; home testing currently available in selected states. (See FAQs below for more info).
Blood testing clarifies inflammatory activity in rheumatoid arthritis, guiding diagnosis and monitoring disease burden. At Superpower, we measure ESR, CRP, albumin, and derived ratios FAR and CAR to quantify systemic inflammation. We offer in-clinic and at-home testing; home collection is currently available in selected states. (See FAQs below for more info).
Blood testing for neutropenia clarifies infection risk and marrow immune function. At Superpower, we measure neutrophils and absolute neutrophils to identify neutropenia. We offer both in-clinic and at-home blood testing. At-home testing for neutropenia is currently available in selected states. (See FAQs below for more info).
Blood testing for lymphopenia identifies weakened immune capacity by measuring circulating lymphocytes (absolute lymphocyte count). At Superpower, we test lymphocytes and absolute lymphocytes for lymphopenia. We offer in-clinic and at-home blood testing; home collection is currently available in selected states. (See FAQs below for more info).
Blood tests help confirm Kawasaki Disease’s systemic inflammation and vascular involvement. CRP and ESR track acute inflammation, WBC signals immune activation, and platelets reflect later-phase thrombocytosis. At Superpower, we provide CRP, ESR, WBC, and platelet testing in-clinic and at home. Home testing available in selected states. (See FAQs below for more info).
Blood testing helps track intestinal inflammation and systemic burden in IBD, guiding assessment of activity and complications. At Superpower, we measure CRP, ESR, albumin, FAR, and CAR. We offer in-clinic and at-home blood testing; home IBD testing is currently available in selected states. (See FAQs below for more info).
Blood testing for HIV/AIDS Advanced monitors immune system capacity, guiding care by tracking white cell defenses (lymphocytes) and total counts (absolute lymphocytes). At Superpower, we provide these tests in-clinic and at home; home testing is available in selected states. (See FAQs below for more info).
Blood testing for eosinophilia clarifies immune activation that drives allergies, asthma, parasitic infection, and other inflammation. At Superpower, we measure eosinophils and absolute eosinophils to assess granulocyte burden. We offer in-clinic and at-home testing; home collection is available in selected states. (See FAQs below for more info).
Chronic infections—hepatitis B/C, HIV, tuberculosis—strain immune and inflammatory systems. Blood testing reveals systemic activity via CRP, ESR, and WBC. At Superpower, we provide these tests in-clinic and at home; home collection is available in selected states. (See FAQs below for more info).
Chronic infections stress immune and inflammatory pathways. Blood testing clarifies this physiology by tracking inflammation (ESR, CRP), immune cell activity (WBC), and systemic immune-inflammation (SII). At Superpower, we offer in-clinic and at-home testing for these markers. At-home chronic infection testing is available in selected states. (See FAQs below for more info).
Blood testing for celiac disease reveals malabsorption and inflammation, guiding earlier recognition and care. Superpower provides hemoglobin, ferritin, folate, B12, and ESR tests to assess anemia and systemic inflammation. Choose in-clinic or at-home collection; home testing is currently available in selected states. (See FAQs below for more info).
Blood testing for cancer-associated inflammation tracks immune–inflammatory balance that influences tumor behavior and prognosis (neutrophil–lymphocyte ratio, platelet–lymphocyte ratio, systemic immune-inflammation index, systemic inflammation response index: NLR, PLR, SII, SIRI). Superpower offers in-clinic and at-home testing; home collection is currently available in selected states. (See FAQs below for more info).
Severe COVID-19 strains the immune and inflammatory systems. Blood testing for COVID-19 severe tracks this physiology: NLR reflects immune imbalance, CRP signals systemic inflammation, and ferritin marks hyperinflammatory stress. At Superpower, we provide NLR, CRP, and ferritin tests in-clinic and at home; home collection available in selected states. (See FAQs below for more info).
Blood testing helps track COPD inflammation, infection risk, and systemic effects. At Superpower, we measure WBC, neutrophils, CRP (C-reactive protein), and albumin to contextualize respiratory status. We offer in-clinic and at-home testing; home collection is available in selected states. (See FAQs below for more info).
Basophilia signals immune activation or myeloproliferative activity; measuring basophils—especially the absolute basophil count—clarifies allergic, inflammatory, or hematologic drivers. At Superpower, we provide basophils and absolute basophils blood tests for basophilia, in-clinic and at-home. Home blood testing is available in selected states. (See FAQs below for more info).
Blood testing supports asthma care by tracking airway inflammation and systemic stress. At Superpower, we offer eosinophils and CRP tests for asthma assessment. Superpower provides both in-clinic and at-home blood testing. Home blood testing for asthma is available in selected states. (See FAQs below for more info).
Blood testing clarifies the inflammatory biology of allergic rhinitis, guiding care. At Superpower, we measure eosinophils (allergic effector cells) and CRP (systemic inflammation). We offer testing in-clinic and at home. Home blood testing for Allergic Rhinitis is available in selected states. (See FAQs below for more info).
Your IgE test reveals how your immune system responds to allergens and potential threats in your environment.
Your CRP test results show levels of a biomarker associated with inflammation in your body.
Your immune system's overreaction to harmless substances can be measured, understood, and managed with the right testing approach.
Why some people get sick more often than others — and the biomarkers most likely to explain reduced immune resilience.
Repeated illness every few weeks often has a measurable biological explanation. Here is what the research points to.
