Laboratory Science Hematology and Blood Analysis 3

Question 1

What is the purpose of the reticulocyte count in hematology?

Accepted Answer

Assess bone marrow erythropoietic activity

Answer

Measure platelet aggregation

Answer

Detect WBC abnormalities

Answer

Measure clotting factor levels

Question 2

Which tube color is used for coagulation studies (PT/aPTT) in the US?

Accepted Answer

Light blue/sodium citrate

Answer

Gold/SST

Answer

Lavender/EDTA

Answer

Green/heparin

Question 3

What morphological change in RBCs is described as 'target cells' (codocytes)?

Accepted Answer

RBCs with a central dense area surrounded by a pale ring and a dense outer rim

Answer

RBCs with irregular spicules

Answer

Fragmented RBCs

Answer

RBCs with Howell-Jolly bodies

Question 4

A patient with chronic kidney disease would most likely show which hematological finding?

Accepted Answer

Normochromic normocytic anemia due to decreased erythropoietin

Answer

Polycythemia

Answer

Eosinophilia

Answer

Thrombocytosis

Question 5

What is the order of blood tube draw for multiple specimens (correct order of draw)?

Accepted Answer

Citrate → SST/Gold → Heparin → EDTA

Answer

EDTA → Citrate → SST → Heparin

Answer

SST → EDTA → Citrate → Heparin

Answer

Heparin → EDTA → SST → Citrate

Question 6

Schistocytes (fragmented RBCs) on a peripheral smear are most associated with which condition?

Accepted Answer

Microangiopathic hemolytic anemia (TTP/HUS)

Answer

Iron deficiency anemia

Answer

Megaloblastic anemia

Answer

Aplastic anemia