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Question 1

is a non-specific test that indicates changes in plasma protein concentrations due to infection or injury

Answer 1

Erythrocyte sedimentation rate (ESR)

Question 2

The ESR test is performed in the laboratory by placing anticoagulated blood

Answer 2

upright tube (Westegren’s most often)

Question 3

The initial lag phase

Answer 3

10m

Question 4

The packing phase

Answer 4

10m

Question 5

The phase of rapid RBC falling

Answer 5

40m

Question 7

Methods of measuring esr

Answer 7

Westerngren Method
Wintrobe and Landsber method

Question 8

The test measures sedimentation of red cells( in diluted blood) after one hour in an open ended tube mounted vertically on a stand.

Answer 8

Westerngren method

Question 9

The recommended tube for westerngren method

Answer 9

straight glass or rigid plastic transparent tube

Question 10

length in westerngren method

Answer 10

30 cm in length and not less than 2.55 mm in diameter.

Question 11

Venous Blood is collected into a

Answer 11

sodium citrate tube or EDTA tube

Question 12

The result is expressed as ESR

Answer 12

X mm in 1 hr

Question 13

The test should be carried out within

Answer 13

4 hours of collecting the blood

Question 14

A delay up to 6 hours is permissible provided that the blood is kept at

Answer 14

4 degree C.

Question 15

EDTA blood can be used 24 hours on a specimen that was kept in 4 degree C if the volume of

Answer 15

109 mmol/l trisodium citrate is added to 4 volumes of blood

Question 16

ESR is helpful in diagnosing two specific inflammatory diseases

Answer 16

temporal arteritis
polymyalgia rheumatica

Question 17

ESR of more than 100 mm/hr is strongly associated with serious underlying disorders like

Answer 17

connective tissue disease
infections
malignancies

Question 18

This method of cell counting was originally developed by Coulter Electronics and is referred to as the Coulter principle.

Answer 18

THE ELECTRICAL IMPEDANCE PRINCIPLE

Question 19

is the most common light source used in flow cytometers

Answer 19

Laser light

Question 20

Properties of flow cytometry

Answer 20

intensity
stability
monochromatism

Question 21

Measures how much a chemical substance absorbs light by measuring the intensity of light as a beam of light passes through sample solution.

Answer 21

spectrophotometry

Question 22

Hemoglobin determination

Answer 22

Cyanmethemoglobin method

Question 23

In a Wright-stained blood smear, young reticulocytes with a high amount of RNA residual have a blue appearance

Answer 23

polychromatophilia