CBC RBC`

Question 1

Reticulocyte

Answer 1

Immature RBC

Contains RNA, present for 1-2 days

Should not be seen in peripheral smear

Question 2

Normal number of RBCS

Answer 2

4-6 million

More in males

Question 3

Normal Hb values

Answer 3

Males: 14-18

Females: 12-16

Question 4

Normal values

MCV

Answer 4

80-100

Question 5

Normal values

MCHC

Answer 5

31-37

Question 6

Normal values

RDW

Answer 6

11-16%

Question 7

Critical values of Hb

Answer 7

<5

> 20

Question 8

Hct <35%

Answer 8

Moderate to severe anemia

Question 9

Hct <20%

Answer 9

Cardiac failure

Question 10

Hct >60%

Answer 10

Increased hemostasis

Question 11

Increased reticulocyte count indicates

Answer 11

RBC production is occuring

Question 12

Decreased reticulocyte count indicates

Answer 12

Bone marrow is not making enough RBC

Question 13

RBC indicates

Answer 13

Define the size and Hb content of red cell

Used to evaluate and classify anemia

Question 14

MCV

Answer 14

Volume occupied by single red cell

Normal: 80-100 fl

SIZE of cell

Question 15

Normal MCV

Answer 15

Normocytic

Question 16

MCV < 80

Answer 16

Microcytic

Question 17

MCV > 80

Answer 17

Macrocyclic

Question 18

MCH

Answer 18

Measure of average weight of hemoglobin per RBC

Can be falsely increased by hyperlidemia and heparin

Question 19

MCHC

Answer 19

Average [Hb] in RBC

Normal values: 31-37

Question 20

Low MCHC

Answer 20

Hypochromia

Question 21

High MCHC

Answer 21

Hyperchromia

Can be high in newborns

Question 22

RDW

Answer 22

Indication of the degree of variation in size of RBC

Normal: 11-16%

Question 23

Abnormal variation in size

Answer 23

Anisocytosis

Question 24

Abnormal variation in shape

Answer 24

Poikilocytes

Question 25

Hypochromia

Answer 25

Pale hollow center Decreased HgB

Question 26

Polychromatic

Answer 26

Immature RBCs Shades of grayish blue

Question 27

Microcytic

Answer 27

Small cells

Question 28

Macrocytic

Answer 28

Large cells

Question 29

Nucleated red cells

Answer 29

Nucleus still present in cell

Question 30

Basophilic stippling

Answer 30

Punctuate stippling of cell Indicates lead poisoning

Question 31

Target cells

Answer 31

Cells w/ dark center and periphery and clear ring b/q

Question 32

Spherocytes

Answer 32

Spherical cells w/o clear center

Question 33

Schistocytes

Answer 33

Irregular contracted cells Fragments

Question 34

Heinz bodies

Answer 34

DNA ruminants in periphery of RBC Also Howell Jolly bodies

Question 35

Nucleated RBCs

Answer 35

Very immature form of RBCs Seen when severe demand for RBCs to be released from marrow Should not see unless infants

Question 36

Test used to measure ability of body to absorb vitamin b12

Answer 36

Schilling test