Haptoglobin Blood Test: Low Haptoglobin, Hemolysis, Normal Range, and Results
Haptoglobin is a blood protein that helps the body clear free hemoglobin when red blood cells break apart. The haptoglobin blood test is most...
Hematocrit (Hct) Blood Test Normal Range: Reference Values and Meaning
Hematocrit, often shortened to Hct, shows how much of your blood volume is made up of red blood cells. A result of 42% means...
Hemoglobin (Hgb) Blood Test Normal Range: Reference Values and Meaning
Hemoglobin, often shortened to Hgb or Hb, is the oxygen-carrying protein inside red blood cells. A hemoglobin blood test shows how much of this...
Hemoglobin and Ferritin: Interpreting Anemia Labs Without Overdoing It
Hemoglobin and ferritin are often ordered together when anemia or low iron is suspected, but they answer different questions. Hemoglobin shows whether the blood...
Hemoglobin and Hematocrit: Difference, Normal Range, and Meaning
Hemoglobin and hematocrit are two closely related red blood cell measurements on a complete blood count, but they are not the same result. Hemoglobin...
Hemoglobin Electrophoresis Test: Hemoglobin Types, Sickle Cell Disease, Thalassemia, and Results
Hemoglobin electrophoresis is a blood test that separates the different forms of hemoglobin inside red blood cells. Hemoglobin is the protein that carries oxygen,...
High Absolute Neutrophil Count (ANC): Causes, Infection, Inflammation, and Meaning
A high absolute neutrophil count means the blood contains more neutrophils than expected for that lab’s reference range. Neutrophils are the white blood cells...
High Basophil Count Blood Test: Causes, Allergies, Inflammation, and Meaning
A high basophil count means your complete blood count with differential found more basophils than expected in your blood. Basophils are the least common...
High Eosinophil Count Blood Test: Allergies, Asthma, Parasites, and Meaning
A high eosinophil count means one type of white blood cell is above the lab’s reference range. Eosinophils help the immune system respond to...
High Hematocrit (Hct) Blood Test: Causes, Dehydration, Polycythemia, and Meaning
High hematocrit means a higher-than-expected percentage of your blood volume is made up of red blood cells. Because red blood cells carry oxygen, the...
High Hemoglobin (Hgb) Blood Test: Causes, Polycythemia, Dehydration, and Meaning
High hemoglobin means the blood contains more hemoglobin than expected for your age, sex, and lab’s reference range. Hemoglobin is the iron-containing protein inside...
High Immature Reticulocyte Fraction (IRF) Test: Causes, Anemia Recovery, and Meaning
Immature reticulocyte fraction, often shortened to IRF, is a blood test marker that shows how many young, newly released reticulocytes are present in your...
High Lymphocyte Count Blood Test: Causes, Viral Infection, Leukemia Risk, and Meaning
A high lymphocyte count means your blood has more lymphocytes than expected for your age and lab range. Lymphocytes are white blood cells that...
High MCV and Low B12 or Folate: Macrocytic Anemia Pattern and Meaning
High MCV with low vitamin B12 or low folate usually points to a macrocytic anemia pattern, where red blood cells are larger than expected...
High Mean Corpuscular Hemoglobin (MCH) Test: Causes, Macrocytic Anemia, and Meaning
Mean corpuscular hemoglobin, or MCH, is one of the red blood cell numbers reported on a complete blood count. It estimates how much hemoglobin...
High Mean Corpuscular Hemoglobin Concentration (MCHC) Test: Causes, Spherocytosis, and Meaning
A high mean corpuscular hemoglobin concentration, or high MCHC, means the hemoglobin inside your red blood cells looks more concentrated than expected. MCHC is...
High Mean Corpuscular Volume (MCV) Test: Causes, Macrocytic Anemia, B12, Folate, and Meaning
Mean corpuscular volume, usually shortened to MCV, is the average size of your red blood cells. A high MCV means those cells are larger...
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...