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What the ferritin-to-albumin ratio measures, why combining two opposing acute-phase proteins reveals more than either alone, and when to retest.
See how ferritin reveals your iron status and overall metabolic balance.
How to identify the type of anemia through biomarkers and what the path to recovery typically looks like.
A guide to low ferritin, what causes iron store depletion, how repletion is approached, and which biomarkers to track during recovery.
What low hematocrit means, the most common causes by type, and the biomarkers needed to identify which cause applies before taking action.
Learn what MPV says about clotting readiness and systemic inflammation.
What RDW measures, why it rises before anemia develops, and how MCV pairing identifies the underlying deficiency.
See what your platelet number says about clotting and systemic stress.
An early quality-control signal for red blood cell production.
A smarter way to read iron economy and red cell quality.
What the ferritin/CRP ratio measures, how hepcidin connects the two signals, and why CRP context changes how ferritin should be read.
Learn how total iron levels respond to diet, hormones, and inflammation — and why they're best read in context.
Understand why hemoglobin is essential for energy metabolism and endurance.
A transport metric that sharpens iron interpretation.
Understand how MCHC sharpens interpretation of red cell health.
What TSAT measures, how serum iron divided by TIBC reveals iron-loading state, and why inflammation context changes interpretation.
What red blood cell count measures, how to read low and high results, and which companion markers complete the picture.
A cornerstone marker for red cell size and nutrient status.
See how MCH adds detail to anemia and nutrient evaluation.
Learn how hematocrit ties to endurance hydration and oxygen delivery.
Nucleated red blood cells (NRBCs) are immature red blood cells that still contain a nucleus, unlike the mature red blood cells circulating in healthy adult blood. Their presence in a peripheral blood smear is typically associated with significant bone marrow stress or accelerated red blood cell production. Elevated NRBC counts may signal conditions ranging from severe anemia to bone marrow disorders, making them an important marker for further clinical evaluation.
The NRBC blood test measures nucleated red blood cells, which are immature red cell precursors that normally complete their development inside the bone marrow before entering circulation. A result of zero indicates that no nucleated red blood cells were detected in the peripheral blood sample, which is the expected finding in healthy adults. Understanding this result in context can help clarify your overall hematologic and bone marrow health.
Nucleated red blood cells (NRBCs) are immature red blood cell precursors that normally mature and lose their nucleus in the bone marrow before entering the bloodstream. The NRBC absolute count measures the number of these cells circulating in peripheral blood, where their presence in adults is generally considered clinically significant. Tracking this marker may provide early insight into bone marrow stress, oxygen-carrying capacity, and overall hematologic health.
Total iron binding capacity (TIBC) is a measure of how much iron your blood could carry if all of its transport slots were filled. It mainly reflects the amount of transferrin, the iron-transport protein made by the liver (transferrin, a glycoprotein produced by hepatocytes). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Red cell distribution width (RDW) is a measure of how varied the sizes of your red blood cells are. Red blood cells (erythrocytes) are made in your bone marrow, loaded with hemoglobin, and released into the bloodstream to carry oxygen for about four months. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Red blood cells are the body’s oxygen-carrying cells (erythrocytes). They are made in the bone marrow from stem cells under the signal of the kidney hormone erythropoietin, filled with the protein hemoglobin, circulate about 120 days, and are then cleared by the spleen and liver. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The RDW/MCV ratio is a calculated index from a standard complete blood count. It divides the red cell distribution width (RDW)—a measure of how varied your red blood cells are in size—by the mean corpuscular volume (MCV), the average size of those cells. Available at 2,000+ lab locations and at-home (select states). See FAQs below
The RDW/Ferritin ratio is a combined blood index that relates red blood cell size variability (red cell distribution width, RDW) to the body’s iron reserves (serum ferritin). RDW comes from the standard blood count and describes how uniform or mixed in size your circulating red cells are (anisocytosis). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Platelet count is the measured number of platelets (thrombocytes) circulating in your blood. Platelets are tiny, disc-shaped cell fragments produced in the bone marrow when large precursor cells (megakaryocytes) shed portions of their cytoplasm. Their production is guided by the hormone thrombopoietin from the liver. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Mean platelet volume (MPV) is the average size of your platelets—the tiny, anucleate cell fragments that help your blood clot. Platelets are shed from large bone‑marrow cells called megakaryocytes and circulate for several days before being cleared. MPV summarizes how big these circulating platelets are at a given time (platelet volume), offering a snapshot of their Available at 2,000+ lab locations and at-home (select states). See FAQs below
Mean corpuscular volume (MCV) is the average size of your red blood cells. It is a property of the circulating red cell population measured from a routine blood sample, reported within the complete blood count (CBC). Red blood cells (erythrocytes) are formed in the bone marrow through red cell production (erythropoiesis) and released into the bloodstream; MCV captures their Available at 2,000+ lab locations and at-home (select states). See FAQs below
Mean corpuscular hemoglobin concentration (MCHC) is a red‑cell index that describes how concentrated the oxygen-carrying protein is inside a Available at 2,000+ lab locations and at-home (select states). See FAQs below
Mean corpuscular hemoglobin (MCH) is the average amount of hemoglobin contained in each red blood cell. Hemoglobin is the iron-bearing protein that binds oxygen in the lungs and releases it to tissues. Red blood cells are formed in the bone marrow, where hemoglobin is packed into them as they mature. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Total iron blood testing measures the amount of iron circulating in the liquid part of your blood, almost all of it carried by the transport protein transferrin. This circulating iron comes from two sources: iron absorbed from food in the small intestine and iron recycled from worn‑out red blood cells by cleanup cells in the spleen and liver (macrophages). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Iron saturation is the share of your blood’s iron‑transport protein that is actually carrying iron at a given moment. In scientific terms, it is transferrin saturation (TSAT): the percentage of transferrin, a protein made by the liver, with its iron‑binding sites filled. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Hemoglobin blood testing measures the amount of hemoglobin, the red, oxygen‑carrying protein inside your red blood cells (erythrocytes). Hemoglobin is made in the bone marrow as new red blood cells are formed (hematopoiesis). Each hemoglobin molecule holds iron within heme groups and sits packed inside circulating red blood cells, which is why the test is done on blood. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Hematocrit blood testing measures the share of your blood made up by red blood cells. It’s a property of whole blood, capturing how much space the red cells (erythrocytes) occupy relative to the liquid portion (plasma). These cells are produced in the bone marrow under signals from the kidneys’ hormone erythropoietin (EPO) and are filled with hemoglobin, the protein that binds oxygen. Available at 2,000+ lab locations and at-home (select states). See FAQs below
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). Available at 2,000+ lab locations and at-home (select states). See FAQs below
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. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Ferritin blood testing measures ferritin—the body’s primary iron‑storage protein—in the circulation. Ferritin is made inside cells throughout the body, especially in the liver, spleen, and bone marrow, where iron is stored and recycled (hepatocytes and macrophages of the reticuloendothelial system). Its protein shell (apoferritin) holds iron safely in a mineral form (ferric iron). Available at 2,000+ lab locations and at-home (select states). See FAQs below
Thrombophilia testing clarifies clotting risk by assessing inflammation and coagulation balance. At Superpower, we test homocysteine, CRP, platelets, and NLR for Thrombophilia. Superpower provides both in-clinic and at-home blood testing. Home blood testing for Thrombophilia is available in select states. See FAQs below for more information.
Thrombocytosis—too many platelets—signals altered clotting and inflammatory activity that can reflect reactive illness or bone‑marrow disorders. At Superpower, we test platelet count, MPV (mean platelet volume), and CRP to profile risk. We offer in‑clinic and at‑home testing; home testing is available in selected states. (See FAQs below for more info).
Thrombocytopenia requires timely blood testing to gauge clotting capacity and marrow function. Platelet count quantifies circulating platelets; MPV (Mean platelet volume) reflects platelet size and production dynamics. At Superpower, we offer in-clinic and at-home testing. Home testing for Thrombocytopenia is currently available in selected states. (See FAQs below for more info).
Polycythemia vera is driven by overproduction of blood cells; timely blood testing clarifies this physiology. At Superpower, we measure RBC, hemoglobin, hematocrit, platelet count, and WBC to assess risk and disease activity. We offer in-clinic and at-home testing; home collection is available in selected states. (See FAQs below for more info).
Blood testing helps detect MGUS early, signaling abnormal plasma cell protein patterns. At Superpower, we measure total protein, globulin, and the A/G ratio to screen for MGUS. We offer in-clinic and at-home testing; home collection is currently available in selected states. (See FAQs below for more info).
Identifying iron deficiency anemia early protects oxygen delivery, energy metabolism, and cognitive performance. Superpower offers comprehensive panels—Hemoglobin, hematocrit, RBC, MCV, MCH, MCHC, RDW, ferritin, iron, TIBC, and % Saturation—with in-clinic or at-home options. Home testing is currently available in selected states. (See FAQs below for more info).
Blood testing clarifies red blood cell turnover and destruction (hemolysis), guiding diagnosis and severity. At Superpower, we test hemoglobin, RDW/MCV ratio, bilirubin indirect, and BAR for hemolytic anemia. Superpower offers in-clinic and at-home testing; home collection is currently available in selected states. (See FAQs below for more info).
Blood testing helps detect and quantify GI bleeding by revealing anemia and iron loss. At Superpower, we test hemoglobin, iron, ferritin, and TIBC. We offer in-clinic and at-home testing; home collection for GI bleed testing is available in selected states. (See FAQs below for more info).
Blood testing is essential for diagnosing and monitoring disseminated intravascular coagulation (DIC), a life‑threatening clotting disorder. At Superpower, we provide platelets, WBC, and CRP testing for DIC. We offer in‑clinic and at‑home blood testing; home testing is available in selected states. (See FAQs below for more info).
Blood testing clarifies anemia of chronic disease by linking oxygen transport and iron handling to inflammation. Superpower measures hemoglobin, ferritin, iron, TIBC, % saturation, and the CRP/albumin ratio. We offer in-clinic and at-home testing; home collection is currently available in selected states. (See FAQs below for more info).
Acute blood loss stresses oxygen delivery and circulation. Blood testing clarifies its impact by measuring red cell capacity—hemoglobin, hematocrit, and RBC count. At Superpower, we offer these tests in-clinic and at home. Home collection is currently available in selected states. (See FAQs below for more info).
Your red blood cell count tells a story about how efficiently your body delivers oxygen to every tissue.
Your red blood cells come in different sizes, and that size tells a story about your health that symptoms alone might miss.
Your MCHC blood test reveals how densely packed your red blood cells are with oxygen-carrying hemoglobin.
Your blood type affects everything from transfusion safety to pregnancy planning, and Labcorp's test reveals your complete ABO and Rh profile.
Your iron biomarker test reveals far more than just whether you're anemic, it's a window into your energy, immunity, and overall cellular health.
Your iron panel test reveals how well your body stores, transports, and uses iron, the mineral that powers your energy and oxygen delivery.
Your hemoglobin test reveals how well your blood carries oxygen throughout your body.
Your complete blood count reveals the hidden story of your blood's cellular army at work.
Understanding your blood type through at-home testing can provide valuable health insights, but knowing when professional confirmation is essential makes all the difference.
Your blood type test chart reveals more than just donation compatibility, it's a key piece of your health profile that affects everything from disease risk to medication response.
Understanding your blood type at home opens doors to personalized health insights you might never have considered.
Understanding your anemia test results could reveal why you're tired, short of breath, or struggling with concentration.
Your iron storage levels reveal more about your energy and health than you might expect.
An educational guide to heme, the iron-containing molecule that carries oxygen through your blood, and what testing reveals about it.
Heme iron is the highly bioavailable form found in meat and seafood. Here is how it differs from plant-based non-heme iron and why the distinction matters.
Non-heme iron, the form found in plants and fortified foods, is significantly less bioavailable than heme iron. Understanding what affects its absorption can make a real difference for those relying on plant-based sources.
Iron comes in two dietary forms with very different absorption rates. Understanding the distinction can clarify why diet alone sometimes fails to correct deficiency.
What heme iron is, how it differs from non-heme iron, which foods contain it, and what biomarkers reveal your iron status.
