High Mean Platelet Volume (MPV) Test: Causes, Platelet Activation, and Meaning
Mean platelet volume, or MPV, is a platelet size marker reported on many complete blood count results. A high MPV means your platelets are...
High Monocyte Count Blood Test: Causes, Infection, Inflammation, and Meaning
A high monocyte count means one type of white blood cell is above the expected range. Monocytes help your immune system clean up infection,...
High Neutrophil Count Blood Test: Causes, Infection, Inflammation, and Meaning
A high neutrophil count usually means your immune system is reacting to something recent or ongoing. Neutrophils are the most common white blood cells...
High Platelet Count Blood Test: Causes, Thrombocytosis, Clot Risk, and Meaning
A high platelet count means your blood test found more platelets than expected in a measured amount of blood. Platelets are small blood cells...
High Platelet Distribution Width (PDW) Test: Causes, Platelet Activation, and Meaning
Platelet distribution width, or PDW, is a platelet size-variation marker that may appear on a complete blood count. A high PDW means the platelets...
High Plateletcrit (PCT) Blood Test: Causes, Platelet Mass, Clot Risk, and Meaning
Plateletcrit, often shortened to PCT on some complete blood count reports, estimates the total volume of platelets in your blood. A high plateletcrit usually...
High Platelets and Low Ferritin: Iron Deficiency, Inflammation, and Meaning
High platelets and low ferritin most often point toward iron deficiency with a reactive rise in platelets. Ferritin reflects stored iron, while platelets are...
High Red Blood Cell (RBC) Count Test: Causes, Polycythemia, Dehydration, and Meaning
A high red blood cell count means your blood sample contains more red blood cells than expected for your age, sex, hormone status, altitude,...
High Red Cell Distribution Width (RDW) Test: Causes, Anemia, Iron Deficiency, and Meaning
A high red cell distribution width, or high RDW, means your red blood cells vary more in size than expected. This pattern is called...
High Reticulocyte Count Test: Causes, Anemia Recovery, Blood Loss, and Meaning
A high reticulocyte count usually means your bone marrow is releasing extra young red blood cells into the bloodstream. That can be a healthy...
High White Blood Cell (WBC) Count Test: Causes, Infection, Inflammation, and Meaning
A high white blood cell count means the immune cell level in your blood is above the reference range used by the laboratory. White...
Immature Granulocytes (IG) Blood Test: High IG, Normal Range, Infection, Inflammation, and Meaning
Immature granulocytes are young white blood cells that usually stay in the bone marrow until they mature. When they appear in the bloodstream, the...
Immature Reticulocyte Fraction (IRF) Normal Range: Reference Values and Meaning
Immature reticulocyte fraction, often shortened to IRF, is a blood test marker that shows how many of your reticulocytes are very young. Reticulocytes are...
Low Absolute Neutrophil Count (ANC): Causes, Infection Risk, and Meaning
A low absolute neutrophil count means the blood has fewer neutrophils than expected. Neutrophils are white blood cells that respond quickly to bacteria and...
Low Basophil Count Blood Test: Causes and Meaning
A low basophil count on a blood test usually has limited meaning when the rest of the complete blood count is normal. Basophils are...
Low Eosinophil Count Blood Test: Causes and Meaning
A low eosinophil count usually means the number of eosinophils in the bloodstream is very small at the time of testing. Eosinophils are a...
Low Hematocrit (Hct) Blood Test: Causes, Symptoms, Anemia, and Meaning
Low hematocrit means the percentage of your blood made up of red blood cells is lower than expected. Because red blood cells carry oxygen,...
Low Hemoglobin (Hgb) Blood Test: Causes, Symptoms, Anemia, and Meaning
Hemoglobin, often shortened to Hgb or Hb, is the oxygen-carrying protein inside red blood cells. When hemoglobin is low, your blood carries less oxygen...
Low Immature Reticulocyte Fraction (IRF) Test: Causes, Bone Marrow Response, and Meaning
A low immature reticulocyte fraction means the blood contains fewer very young reticulocytes than expected. Reticulocytes are newly made red blood cells, and the...
Low Lymphocyte Count Blood Test: Causes, Infection Risk, Immunity, and Meaning
A low lymphocyte count means the lymphocyte part of your white blood cell count is below the expected range. Lymphocytes are immune cells that...