Chapter 13 - Laboratory Tests

Question 1

Antiglobulin Test (Coombs test)

Answer 1

Test for the presence of antibodies that coat and damage erythrocytes

Question 2

Bleeding time

Answer 2

Time required for blood to stop from a tiny puncture wound.

Normal time = 8 minutes or less.

Question 3

Coagulation Time

Answer 3

Time required for venous blood to clot in a test tube. Normal time is <15 minutes

Question 4

Complete Blood Count (CBC)

Answer 4

Determination of numbers of blood cells, hemoglobin concentration, hematocrit, and red cell values - MCH, MCV, MCHC

Question 5

Erythrocyte Sedimentation Rate (ESR)

Answer 5

Speed at which erythrocytes settle out of plasma

Question 6

Hematocrit (Hct)

Answer 6

Percentage of erythrocytes in a volume of blood

Question 7

Hemoglobin test

Answer 7

Test amount of hemoglobin in a sample of peripheral blood

Question 8

Platelet count

Answer 8

Number of platelets per cubic millimeter or microliter of blood

Question 9

Prothrombin Time (PT)

Answer 9

Test of the ability of blood to clot

Question 10

Red Blood Count (RBC)

Answer 10

Number of erythrocytes per cubic millimeter or microliter of blood

Question 11

Red Blood Cell Morphology

Answer 11

Microscopic examination of a stained blood smear to determine the shape of individual red cells

Question 12

White Blood Cell Count (WBC)

Answer 12

Number of leukocytes per cubic millimeter or micrometer of blood

Question 13

White Blood Cell Differential

Answer 13

Percentages of different type of leukocytes in the blood