HEMATOLOGY

Question 1

GRADED AS POSITIVE only

Answer 1

Sickle cells
Basophilic stippling
Pappenheimer bodies
Howell-Jolly bodies

Question 2

2+ Spherocytes

Answer 2

6-10/field

Question 3

> 10/field acanthocytes

Answer 3

3+

Question 4

ovalocytes 3-10/field

Answer 4

1+

Question 5

codocyte >20/field

Answer 5

3+

Question 6

15 stomatocytes/field

Answer 6

2+

Question 7

normal platelet estimate

Answer 7

200,000 - 400,000/uL

Question 8

MODERATE increase in platelet estimate

Answer 8

600,000-800,000/uL

Question 9

LOW NORMAL in platelet estimate

Answer 9

150,000-199,000/uL

Question 10

Anulocyte is graded as

Answer 10

4+

Question 11

has a thin rim of hemoglobin

Answer 11

Anulocyte (4+)

Question 12

endpoint of a fibrometer

Answer 12

clot formation

Question 13

25-50% macrocytosis graded as

Answer 13

2+ to 3+

Question 14

3% polychromasia graded as

Answer 14

1+

Question 15

Rouleaux graded as “MARKED”

Hubbard

Answer 15

5 or more RBC chains are found per thin microscopic field

Question 16

aggregates 5-10 RBCs graded as

Answer 16

2+

Question 17

hypochromia grading of >2/3

Answer 17

2+ to 3+

Question 18

automated coagulation instrument

Answer 18

MDA
STA-R
ACL
AMAX
BCR

Question 19

Semi -automated coagulation instrument

Answer 19

Fibrometer
KC4 Delta
STart4

Question 20

When 2 cells pass through an orifice simultaneously & counted as 1 cell

Answer 20

COINCIDENCE

Question 21

OHM’S LAW formula

Answer 21

V= I x R

Question 22

Effect of cold agglutinins in RBC parameters

Answer 22

decrease RBC count, HCT

increase MCV, MCHC

Question 23

increase RBC count, HCT

decrease MCV, MCHC

Answer 23

autoagglutination

Question 24

most common problem in cell counting, causing increase in current

Answer 24

Aperture plugs

Question 25

an error caused by nature of specimen that makes accurate RBC & platelet count impossible

Answer 25

increased number of schistocytes

Question 26

(+) or (-) error

Answer 26

improper setting of aperture current or threshold

Question 27

Values derived from RBC histogram

Answer 27

RDW & MCV

Question 28

Values derived from platelet histogram

Answer 28

MPV & PDW

Question 29

PRINTED on elec. impedance written report

Answer 29

Scattergram histogram flagging

Question 30

side angle or 90' light scatter measures

Answer 30

Cytoplasmic granularity

Question 31

MPV should be measured at what time period

Answer 31

1-3 hours after collection

Question 32

forward light scatter measures

Answer 32

cell size

Question 33

components of flowcytometer

Answer 33

computer Optics Fluidics Electronics

Question 34

principle of Technicon analyzer

Answer 34

optical light scattering

Question 35

principle of Coulter counter and Sysmex counter

Answer 35

Electrical impedance

Question 36

Directly counted by the electrical impedance instrument

Answer 36

``` RBC WBC Platelet Hgb reticulocytes ```

Question 37

automation principle that uses 2 electrodes to determine cell size

Answer 37

Electrical impedance

Question 38

dilution of RBC count using automated counting instrument

Answer 38

1:50,000

Question 39

in WBC CATEGORIES ON COULTER COUNTER, small cells refer to

Answer 39

Lymphocytes

Question 40

in WBC CATEGORIES ON COULTER COUNTER, medium cells refer to

Answer 40

Mononuclear cells

Question 41

in WBC CATEGORIES ON COULTER COUNTER, large cells refer to

Answer 41

Granulocytes

Question 42

effect of microcytosis on platelet count using automated counters

Answer 42

Spurious increase

Question 43

size of microcytic RBCs

Answer 43

<6um

Question 44

Screening tests for ANEMIA ASSOCIATED WITH CHRONIC BLEEDING; BM RESPONSE

Answer 44

Hgb Hct reticulocyte count

Question 45

Screening tests for thrombocytopenia

Answer 45

Platelet count

Question 46

Screening tests for deficiencies of factors II, V, VII or X (CT prolonged)

Answer 46

Prothrombin Time

Question 47

Screening tests for deficiencies of all factors except VII & XIII (CT prolonged)

Answer 47

Partial Thromboplastin Time

Question 48

Screening tests for Hypofibrinogenemia and dysfibrinogenemia

Answer 48

Thrombin time or fibrinogen assay

Question 49

a screening procedure for the measurement of fibrinolytic activity

Answer 49

Euglobin clot lysis time

Question 50

the CLOSER the ISI to 1 the ______ the reagent is

Answer 50

MORE SENSITIVE

Question 51

the HIGHER the ISI to 1 the ____ the reagent is

Answer 51

LESS SENSITIVE

Question 52

Angle 2 of RBC Analysis in Technicon

Answer 52

High-angle forward scatter, 5-15'

Question 53

target INR for pulmonary embolism

Answer 53

2.5

Question 54

INR for preventing DEEP VEIN THROMBOSIS

Answer 54

2 to 3

Question 55

specimens for PT and APTT must be centrifuged within ___

Answer 55

1 hour (60 minutes)

Question 56

specimen for APTT must be TESTED within ____

Answer 56

4 hours

Question 57

specimen for PT must be TESTED within ____

Answer 57

24 hours

Question 58

centrifuge blood for

Answer 58

15 mins @ 1500 g

Question 59

PT reagent

Answer 59

Thromboplastin-Calcium Chloride (0.2 mL or 200 uL)

Question 60

APTT reagent

Answer 60

activator + phospholipid

Question 61

volume of plasma for PT testing

Answer 61

0.1 mL (100 uL)

Question 62

volume of plasma for APTT testing

Answer 62

0. 2 mL (200uL) - Brown | 0. 1 mL (100 uL) - Steininger

Question 63

VISUAL detection of fibrin clot formation

Answer 63

Tilt-tube method

Question 64

in DIC, D-dimer test will be positive after how many hours

Answer 64

4 hours

Question 65

Bethesda assay

Answer 65

test for quantitating factor VIII inhibitor