QBC Star Instrument

Question 1

What is the most frequently ordered lab?

Answer 1

CBC

Question 2

What are the things you would see on a CBC Results?

Answer 2

WBC (Leukocyte) count 
RBC Count 
Hgb Count 
Hct Count 
Plt Count

Question 3

What are the RBC indices on a CBC?

Answer 3

MCV
MCH
MCHC
RDW

Question 4

This test is used to determine the presence of an infection or leukemia?

Answer 4

White Blood Cells w/Differential

Question 5

Normal WBC ranges?

Answer 5

4.5-11.0 x10

Question 6

Critical values for WBC w Diff

Answer 6

low <2,000

high 30,000

Question 7

Neutrophils are also known as “_________________”

Answer 7

Poly, Segs, or PMN’s

Question 8

What is the the measurement of the average volume (size) of RBC’s?

Answer 8

MCV

Question 9

an increase in MCV is normally associated with what conditions?

Answer 9

Vitamin B 12 or folate deficiency

Question 10

a decrease in MCV is associated with what conditions?

Answer 10

some abnormality in Hgb synthesis

Question 11

normal range for MCV in a cell

Answer 11

76-96fl/cell

Question 12

an increase in MCH is associated with what conditions?

Answer 12

Vitamin B12 or folate deficiency

Question 13

what does a decrease in MCH usually seen with?

Answer 13

decrease seen in an iron deficiency

Question 14

normal range of MCH?

Answer 14

27-32 pg/cell

Question 15

How is the average concentration of hemoglobin in a given volume of packed red blood cells calculated? (MCHC)

Answer 15

MCHC= Hgb/Hct x 100

Question 16

normal range for MCHC?

Answer 16

30-35 g/gl

Question 17

What part of the CBC is proportionately low in patients with anemia?

Answer 17

Hgb

Question 18

Hgb ranges in adults?

Answer 18

Males 14-17.5 g/dl
Females 12.3-15.3 g/dl

Critical low: <8 g/dl

Question 19

Platelets below what value could run the risk of hemorrhage or spontaneous bleeding may occur and is considered a life threatening risk?

Answer 19

<20,000

Question 20

Platelets at what value could run the risk of thrombosis?

Answer 20

> 1,000,000

Question 21

Causes of leukopenia?

Answer 21

bone marrow deficiency 
collagen vascular disease 
liver or spleen issues 
radiation therapy 
chemo therapy 
immune disease

Question 22

causes of leukocytosis

Answer 22

anemia 
bone marrow tumor 
infectious disease 
bacterial infection 
inflammation 
inflammatory disease 
leukemia 
emotional stress
trauma 
intense exercise

Question 23

malignant appearing lymphocyte cells are usually secondary to which type of disease?

Answer 23

infectious mononucleosis

Question 24

an increase in eosinophils (eosinophilia) is typical in what type of infections?

Answer 24

parasitic infections and allergic disorders

Question 25

what are the term for the disease associated with elevated Hct? low Hct?

Answer 25

Anemia is below reference range | Polycythemia is above the reference range

Question 26

decrease in Hgb points to what? its seen in which conditions?

Answer 26

Hypochromasia. Is seen in iron deficiency anemia and thalassemia

Question 27

What are the QBC star CBC results?

Answer 27

``` Hct Hgb MCHC WBC Gran % gran Lymph/mono % lymph/mono Platelets ```

Question 28

What are the two routine user controls on the QBC star?

Answer 28

STAR button | Door Release Hatch

Question 29

Which side of the QBC star is the power switch located on?

Answer 29

left side

Question 30

Three functions of the STAR button on the QBC star?

Answer 30

Start testing Abort testing Reprint Test Results

Question 31

if you need to reprint test results, what is the most important thing to remember?

Answer 31

hit reprint BEFORE OPENING THE DOOR.

Question 32

Where is the Setup Keyboard located and what is it used for?

Answer 32

front of the printer, beneath the panel, used to enter setup information into the computer such as date, time, and LCD contrast.

Question 33

The QBC star has an orange stain that colors which WBC? what are the associated color results?

Answer 33

Granulocytes appear orange Lymphocytes appear green Platelets appear yellow

Question 34

What is measured directly from the cell layers with QBC star?

Answer 34

hematocrit, white blood cells, and platelet count

Question 35

required materials for QBC star testing?

Answer 35

Whole blood (EDTA) preserved/purple top collection tube QBC star instrument Printer paper

Question 36

How many times do you gently mix the blood sample before filling the QBC star tube?

Answer 36

12-15 times

Question 37

How many microliters are resulted in the QBC star tubes?

Answer 37

65-75 microliters

Question 38

how many times do we rock the QBC star tube?

Answer 38

4 times

Question 39

The QBC start tube must be inserted into the instrument within how many minutes of being prepared and capped?

Answer 39

15 min

Question 40

What is the periodicity of QC values being printed and performed?

Answer 40

every 8 hours and at startup