All Inflammation Biomarkers We Test

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

Systemic Immune-Inflammation Index (SII)

Monocyte-to-HDL Ratio (MHR)

Platelet-to-Lymphocyte Ratio

Systemic Inflammation Response Index (SIRI)

Ferritin-to-Albumin Ratio (FAR)

CRP / Albumin Ratio (CAR)

CRP / Albumin Ratio (CAR)

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. At home blood testing is available in select states. See FAQs below

CRP / DHEA-S Ratio

The CRP/DHEA‑S ratio is a composite blood marker that compares two signals: C‑reactive protein (CRP) and dehydroepiandrosterone sulfate (DHEA‑S). CRP is an acute‑phase protein made by the liver when inflammatory messengers rise (interleukin‑6 and related cytokines). DHEA‑S is the sulfated, long‑circulating form of the adrenal androgen DHEA, produced in the adrenal cortex (zona reticularis) and acting as a hormone precursor pool that tissues can draw on. At home blood testing is available in select states. See FAQs below

CRP-to-Lymphocyte Ratio

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. At home blood testing is available in select states. See FAQs below

Erythrocyte Sedimentation Rate (ESR)

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). At home blood testing is available in select states. See FAQs below

Ferritin / CRP Ratio

The Ferritin/CRP ratio is a composite blood marker that compares two liver‑linked proteins. Ferritin is the body’s iron‑storage protein (intracellular ferritin) concentrated in liver cells and macrophages; a small amount circulates and mirrors stored iron. C‑reactive protein is an inflammation signal (acute‑phase protein) made by the liver in response to immune messengers such as interleukin‑6. At home blood testing is available in select states. See FAQs below

Ferritin-to-Albumin Ratio (FAR)

The Ferritin-to-Albumin Ratio (FAR) is a composite blood marker that compares two familiar proteins. Ferritin is the body’s iron storage protein, mainly kept inside liver and immune cells and released into the bloodstream in small amounts (ferritin; hepatocytes; macrophages). Albumin is the principal protein made by the liver that circulates in plasma and carries many substances (albumin; hepatic synthesis; plasma protein). At home blood testing is available in select states. See FAQs below

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

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. At home blood testing is available in select states. See FAQs below

Monocyte-to-HDL Ratio (MHR)

Monocyte-to-HDL Ratio (MHR) blood testing calculates the proportion of monocytes to high-density lipoprotein in circulation. Monocytes (innate immune white blood cells) are made in the bone marrow and travel in the bloodstream before moving into tissues, where they can mature into macrophages. At home blood testing is available in select states. See FAQs below

Platelet-to-Lymphocyte Ratio

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. At home blood testing is available in select states. See FAQs below

Systemic Immune-Inflammation Index (SII)

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. At home blood testing is available in select states. See FAQs below

Systemic Inflammation Response Index (SIRI)

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. At home blood testing is available in select states. See FAQs below

Testosterone / CRP

Testosterone / CRP blood testing measures two distinct signals from the same blood sample. Testosterone is a sex hormone (androgen steroid) made mainly by the testes and, in smaller amounts, by the ovaries and adrenal glands; it is synthesized from cholesterol and circulates in the bloodstream. At home blood testing is available in select states. See FAQs below