Lab Values

Question 1

What are lab values for?

Answer 1

Screening , diagnosis, monitoring

Question 2

Factors that affect lab values

Answer 2

Age
Gender
Race
Pregnancy
Food ingestion

Question 3

What is all included in CBC?
Complete blood count

Answer 3

RBC
Hgb
Hct
MCV
MCH
MCHC
RDW
Platelet
WBC

Question 4

RBC

Answer 4

of Red blood cells

Question 5

Hgb

Answer 5

O2 carrying protien

Question 6

Hct

Answer 6

Packed volume of RBCs and, % of total volume

Question 7

MCV

Answer 7

Cell size (normocytic,, macro and micro)

Question 8

MCH

Answer 8

Amount of Hgb per cell

Question 9

MCHC

Answer 9

HgB/ Hct per 100 mL/RBCs

Question 10

RDW

Answer 10

Red cell distribution width

Question 11

Platelet

Answer 11

of plot. Per cc/blood

Question 12

WBC

Answer 12

of white cells per mL/blood

Question 13

Normal ranges for RBC count?

Answer 13

3.89-5.40 M/uL

Question 14

What is RBC count?

Answer 14

The number of circulating RBCs in 1 mm3 of blood

Question 15

What kind of molecules does RBC contain?

Answer 15

Hemoglobin molecules

Question 16

RBC indices :

Answer 16

MCV
RDW
MCH
MCHC

Question 17

Normal lab levels of MCV

Answer 17

80-95 fL

Question 18

Normal lab level of RDW

Answer 18

11-14.5%

Question 19

Normal lab levels of MCH

Answer 19

27-31 pg

Question 20

Normal lab levels of MCHC

Answer 20

32-36 g/dL

Question 21

High RBC could indicate what?

Answer 21

Congestinital heart disease, severe chronic obstructive pulmonary disease, polycythemia Vera, severe dehydration

Question 22

What could low RBC count indicate?

Answer 22

Anemia, hemoglobinopathy, cirrhosis, hemolytic anemia, hemorrhage, dietary deficiency, bone marrow failure, prosthetic valves, renal disease, normal pregnancy, rheumatoid arthritis, lymphoma, leukemia, Hodgkin disease

Question 23

Normal ranges for hemoglobin ( Hgb or Hgb)

Answer 23

12-16 g/dL

Question 24

What does hemoglobin (Hgb, Hb) tell us?

Answer 24

Measurement of the total amount of Hgb in the blood

Question 25

What does high amount of hemoglobin (Hgb or Hb) indicate?

Answer 25

Erythrocytosis Congenital heart disease Severe COPD Polycythemia Vera Severe dehydration

Question 26

What does low hemoglobin (Hgb or Hb) indicate?

Answer 26

Anemia hemoglobinopathy Cirrhosis Hemolytic anemia Hemorrhage Dietary deficiency Bone marrow failure Prosthetic valves Renal disease Normal pregnancy Rheumatoid arthritis Lymphoma Leukemia Hodgkin disease

Question 27

What are the normal level of hematocrit (Hct)

Answer 27

37.0-47.0%

Question 28

What does lab draw hematocrit (Hct) give us ?

Answer 28

Indirect measurement of RBC number and volume

Question 29

Hematocrit lab draw is part of what?

Answer 29

Routine testing and anemia evaluation

Question 30

What is the critical values of hematocrit?

Answer 30

< 15% or > 60 %

Question 31

What does high hematocrit indicate

Answer 31

Erthrocytosis Congestional heart disease Severe COPD Polycythemia Vera Severe dehydration

Question 32

What does low hematocrit indicate

Answer 32

Anemia Hemoglobinopathy Cirrhosis Hemolytic anemia Hemorrhage Dietary deficiency Bone marrow failure Prosthetic valves Renal disease Normal pregnancy Rheumatoid arthritis Lymphoma Leukemia Hodgkin disease

Question 33

What is anemia

Answer 33

Decrease in number of RBCs (erythrocytes)

Question 34

What are some causes of anemia?

Answer 34

Blood loss Impaired RBC production RBC destruction Or combination of all 3

Question 35

What are the classifications of anemia

Answer 35

Etiology *** Morphology ***

Question 36

What is the count the normal count of platelet (thrombocytes)

Answer 36

150.000

Question 37

What is platelet count?

Answer 37

Actual count of the number of platelets (thrombocytes) per cubic milliner of blood

Question 38

Where are thrombocytes formed?

Answer 38

Formed in bone marrow

Question 39

What does high count of platelet indicate?

Answer 39

Malignant Polycythemia vera Post splenectomy syndromes Rheumatoid arthritis Iron deficiency anemia

Question 40

What is the name for a high platelet count?

Answer 40

Thrombocytosis

Question 41

A platelet counts that is greater than 1 million puts a person at risk for what?

Answer 41

Risk of clotting

Question 42

What does a count greater than 600,000 be at risk for?

Answer 42

Potential problems

Question 43

What does a low platelet count indicate?

Answer 43

Hypersplenism Hemorrhage Immune thrombocytopenia Leukemia Thrombotic thrombocytopenia Graves’ disease Inherited disorders DIC Pernicious anemia Hemolytic anemia Cancer Chemotherapy Infection

Question 44

What is a name for low platelet count?

Answer 44

Thrombocytopenia

Question 45

What could it mean when people have a platelet count below 50,000?

Answer 45

Significant bleeding

Question 46

TOTAL WMCs (leukocytes) lab values

Answer 46

3.6-10.8 K/uL

Question 47

What do the labs of total WMCs give us

Answer 47

Measurement of total WBC count

Question 48

What is total WBCs apart of?

Answer 48

Routine testing on CBC

Question 49

What is the white cell differential count?

Answer 49

Percentage of each type of leuokocyte present in the specimen

Question 50

What does the high total WBC indicate?

Answer 50

Infection, inflammation, tissue necrosis, sepsis, leukemic neoplasia, trauma, stress, dehydration, thyroid storm

Question 51

What is another name for high total WBCs?

Answer 51

Leukocytosis

Question 52

What does low total WBCs indicate?

Answer 52

Bone marrow failure, chemo, radiation therapy, overwhelming infections, autoimmune disease

Question 53

Another name for low total WBCs

Answer 53

Leukopenia

Question 54

WBC differential

Answer 54

Measurement of percentage of each WBC type in the blood

Question 55

Normal values of Neutrophils

Answer 55

50-70%

Question 56

Normal values of lymphocytes

Answer 56

20-40%

Question 57

Normal values of monocytes

Answer 57

2-8%

Question 58

Normal values of eosinophils

Answer 58

1-4%