Flashcards in Clinical interpretation of lab exams Deck (25)
normal volume of RBC
on the basis of MCV RBCs can be divided into what categories?
on the basis of etiology RBCs can be divided into what categories?
1. blood loss
2. impaired production
3. increased destruction
reticulocyte counts are used to assess what?
what is the ESR used for?
if disease is active or not (underlying organic disease)
the initial reticulocyte % must be corrected for what factor?
degree of anemia
what is the formula for corrected reticulocyte count?
(patient Hct/45) x reticulocyte count
what is the normal corrected reticulocyte count value?
what are the four main causes of microcytic anemia?
1. iron deficiency (most common)
2. anemia of chronic disease (renal failure)
4. sideroblastic anemia (least common)
what are the lab tests for microcytic anemia?
1. serum iron
2. serum TIBC
3. % saturation (serum Fe/TIBC)x100
4. serum ferritin
what is the single best test for iron storage?
what is the gold standard for diagnosing B thalassemia?
how will serum ferritin look for IDA?
how will serum ferritin look for ACD?
normal or increased
how is blood treated for a direct Coomb's test?
patient RBCs are pre-treated with antibody
lymphoid neoplasms arising as discrete mass
lymphoid neoplasms with involvement of blood and bone marrow
what is the only way to determine if a WBC is coming fro T cell or B cell lineage?
immunophenotyping (IHC, flow cytometry)
what is the immunophenotyping marker for B cells?
what is the immunophenotyping marker for T cells?
what is the major blood cancer for patients younger than 10 years of age?
what is the major blood cancer for patients between 10 and 19 years of age?