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Lab > QBC Star > Flashcards

QBC Star Flashcards

1
Q

What is the most frequently ordered lab?

A

CBC

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2
Q

What will be included in RBC Count?

A
  • Mean Corpuscular Volume (MCV)
  • Mean Corpuscular Hemoglobin (MCH)
  • Mean Corpuscular Hgb Concentration (MCHC)
  • RBC Distribution Width (RDW)
  • Hgb, HCT, Plt
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3
Q

WBC Critical values

A

Low < 2,000
High 30, 0000

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4
Q

RBC normal ranges

A

Male: 4.5-5.9
Females: 4.5-5.1

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5
Q

What is MCV?

A

Average size of RBC’s

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6
Q

What is MCH?

A

Hemoglobin per RBC

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7
Q

Ranges of Hbg

A

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

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8
Q

Normal platelet count?

A

150,000-400,000

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9
Q

Critical values for platelets

A

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

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10
Q

Low WBC is called?

A

Leukopenia

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11
Q

High number of WBC is called?

A

Leukocytosis

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12
Q

Main causes of lymphocytes?

A

Adenovirus, chickenpox

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13
Q

Secondary causes of lymphocytes?

A

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

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14
Q

What is anemia?

A

HCT below reference interval of age and sex

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15
Q

What is polycythemia?

A

HCT value above reference interval for age and sex

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16
Q

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

A

STAR button
Door release latch

17
Q

Functions of Star button

A

Start testing
Abort testing
Reprint Test results

18
Q

When does the door of the QBC star open?

A

When the system determines it is safe to do so

19
Q

What does the precision plastic float do?

A

Mechanically expands the buffy coat layers

20
Q

What is measured from the cell layers?

A

HCT, WBC and platelets

21
Q

How is MCHC calculated?

A

(HGB/HCT)*100

22
Q

Blood source for QBC star tube?

A

Capillary finger stick or purple top

23
Q

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

A

12-15 times

24
Q

Where should the QBC star be filled to?

A

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

25
Q

How many times should you invert the QBC star tube?

A

At least 4 times

26
Q

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

A

Within 15 minutes

27
Q

When are electronic QC’s prined?

A

Every 8 hours and at start up

28
Q

Where do you dispose the QBC star tube?

A

Sharps container

Lab (4 decks)

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