Jan 9, 2025 · MCV is the most useful RBC parameter when evaluating a patient with anemia and is used to classify the anemia as microcytic (ie, ≤2.5 th percentile), normocytic, or macrocytic (ie, ≥97.5 th percentile), as discussed below.

This topic discusses causes of macrocytosis and macrocytic anemia. Additional topics discuss the following: Microcytosis/microcytic anemia – (See "Microcytosis/Microcytic anemia".) General anemia evaluation • Child – (See "Approach to the child with anemia".) • Adult – (See "Diagnostic approach to anemia in adults".)

Oct 3, 2024 · A low hemoglobin concentration and/or low hematocrit are the parameters most widely used to diagnose anemia. The reference range depends on age and sex of the patient, as well as other factors such as altitude, prevalence of …

…Values may be low (microcytic), normal (normocytic), or large (macrocytic). The MCV provides a quick, accurate, and readily available method of distinguishing the microcytic anemias (iron deficiency, thalassemia …

This topic discusses causes of microcytosis and microcytic anemia. Additional topics discuss the following: Macrocytosis/macrocytic anemia – (See "Macrocytosis/Macrocytic anemia".) General anemia evaluation • Child – (See "Approach to the child with anemia".)

Microcytic anemia is defined as anemia with a low MCV (ie, ≤2.5 th percentile for age and sex) . The most common causes of microcytic anemia in children are iron deficiency … Diagnosis of thalassemia (adults and children)

Feb 29, 2024 · This topic discusses causes of microcytosis and microcytic anemia. Additional topics discuss the following: Macrocytosis/macrocytic anemia – (See "Macrocytosis/Macrocytic anemia".) General anemia evaluation • Child – (See "Approach to the child with anemia".)

Apr 26, 2024 · The MCV and MCH are usually normal early on but can become lower over time, indicating that the RBCs are smaller (called microcytic) and contain less Hb than normal RBCs (called hypochromic). Knowing the shape, color, and size of the RBCs can help your doctor determine the type of anemia.

Mar 7, 2022 · MCV is the most useful RBC parameter when evaluating a patient with anemia and is used to classify the anemia as microcytic (ie, ≤2.5 th percentile), normocytic, or macrocytic (ie, ≥97.5 th percentile), as discussed below.

Refer to UpToDate for details of the evaluation and other rare causes of microcytic anemia. MCV: mean corpuscular volume; Hb: hemoglobin; ACD/AI: anemia of chronic disease/anemia of inflammation. * ACD/AI often causes normocytic rather than microcytic anemia.