Misc. Hematological Testing Flashcards

1
Q

What is the principle of Microhematocrit defined as?

A

Percentage of total blood volume occupied by Erythrocytes
Packet RBC Volume

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2
Q

What involves the use of clarifying anemia, evaluating fluid status, and monitoring hemorrhagic conditions?

A

Microhematocrit

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3
Q

What is the QC associated with Microhematocrit?

A

Ran in duplicate
Must agree within +- 1

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4
Q

What are the references ranges for Hemtocrit?

A

Male: 42%-52%
Female: 37%-47%
Newborn: 53%-65%

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5
Q

What is a nonspecific screening test for inflammation?

A

Erythrocyte Sedimentation Rate (ESR)
Distance at which RBCs settle per hour (mm/h)

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6
Q

Where do we see elevations of Erythrocyte Sedimentation Rate (ESR)?

A

Myocardial Infarction
Bacterial Infection

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7
Q

What needs to be used for a specimen for ESR?

A

Whole blood EDTA
Not hemolyzed, free of clots and fibrin
Must be brought to room temperature

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8
Q

What is the procedure for running an ESR test?

A

Tube must stand vertically to prevent the alteration of rate of sedimentation
60 minute timer

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9
Q

What are the reference ranges for ESR?

A

<50 >50
Male: 0-15 mm/hr 0-20mm/hr
Female: 0-20 mm/hr 0-30mm/hr

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10
Q

What are the factors that can affect the rate of settlement?

A

Westergren tube not filled correctly
Vibration and angles
Cold Agglutinins
Rouleaux, Globulin, Fibrinogen increase
Clots and Fibrin

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11
Q

What must we do to Reticulocytes before they can be quantified?

A

Stain the with Supravital Stain (New Methylene Blue)
Room Temp for 8 hours

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12
Q

What is the formula to calculate Reticulocyte percentage?

A

%Reticulocyte = #Reticulocytes*100/1000

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13
Q

What are the Retic ranges for infants and adults?

A

Adults: 0.5% - 2.0%
Infants: 2.0% - 6.0%

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14
Q

What are medications such as Levodopa, Malarial medications, Corticotropin, and fever reducing medications responsible for?

A

An increase in the interpretation of Reticulocytes

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15
Q

What are we testing for when we do a Sickle Cell Screening?

A

Hemoglobin S

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