QBC Star

Question 1

What is the most frequently ordered lab?

Answer 1

CBC

Question 2

What will be included in RBC Count?

Answer 2

• Mean Corpuscular Volume (MCV)
• Mean Corpuscular Hemoglobin (MCH)
• Mean Corpuscular Hgb Concentration (MCHC)
• RBC Distribution Width (RDW)
• Hgb, HCT, Plt

Question 3

WBC Critical values

Answer 3

Low < 2,000
High 30, 0000

Question 4

RBC normal ranges

Answer 4

Male: 4.5-5.9
Females: 4.5-5.1

Question 5

What is MCV?

Answer 5

Average size of RBC’s

Question 6

What is MCH?

Answer 6

Hemoglobin per RBC

Question 7

Ranges of Hbg

Answer 7

Males: 14-17.5
Females: 12.3-15.3
Low: < 8

Question 8

Normal platelet count?

Answer 8

150,000-400,000

Question 9

Critical values for platelets

Answer 9

Low: <20,000, risk of hemorrhage or spontaneous bleeding
High: >1,000,000 risk of thrombosis

Question 10

Low WBC is called?

Answer 10

Leukopenia

Question 11

High number of WBC is called?

Answer 11

Leukocytosis

Question 12

Main causes of lymphocytes?

Answer 12

Adenovirus, chickenpox

Question 13

Secondary causes of lymphocytes?

Answer 13

Cytomegalovirus, EBV (mono), Hepatitis, Herpes simplex/zoster, HIV, Influenza, Mumps, Measles

Question 14

What is anemia?

Answer 14

HCT below reference interval of age and sex

Question 15

What is polycythemia?

Answer 15

HCT value above reference interval for age and sex

Question 16

What are the 2 routine user controls on the QBC star?

Answer 16

STAR button
Door release latch

Question 17

Functions of Star button

Answer 17

Start testing
Abort testing
Reprint Test results

Question 18

When does the door of the QBC star open?

Answer 18

When the system determines it is safe to do so

Question 19

What does the precision plastic float do?

Answer 19

Mechanically expands the buffy coat layers

Question 20

What is measured from the cell layers?

Answer 20

HCT, WBC and platelets

Question 21

How is MCHC calculated?

Answer 21

(HGB/HCT)*100

Question 22

Blood source for QBC star tube?

Answer 22

Capillary finger stick or purple top

Question 23

How many times should you invert the blood sample prior to filled QBC star tube?

Answer 23

12-15 times

Question 24

Where should the QBC star be filled to?

Answer 24

At least the first line but no more than the second line

Question 25

How many times should you invert the QBC star tube?

Answer 25

At least 4 times

Question 26

When should the QBC star tube be loaded in after being prepared?

Answer 26

Within 15 minutes

Question 27

When are electronic QC's prined?

Answer 27

Every 8 hours and at start up

Question 28

Where do you dispose the QBC star tube?

Answer 28

Sharps container