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Questions and Answers
The packed cell volume (PCV) is typically higher in females than in males.
The packed cell volume (PCV) is typically higher in females than in males.
False
Centrifuging a blood sample must occur within 6 hours for accurate PCV results.
Centrifuging a blood sample must occur within 6 hours for accurate PCV results.
True
A low PCV can indicate an increase in the number of red blood cells.
A low PCV can indicate an increase in the number of red blood cells.
False
Living at a high altitude can lead to misleading results in a hematocrit test.
Living at a high altitude can lead to misleading results in a hematocrit test.
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PCV testing is less accurate than hemoglobin estimation in detecting anemia.
PCV testing is less accurate than hemoglobin estimation in detecting anemia.
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An increased PCV can result from dehydration or a disease that causes too many red blood cells.
An increased PCV can result from dehydration or a disease that causes too many red blood cells.
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Hemolyzed samples can be tested for PCV without any issues.
Hemolyzed samples can be tested for PCV without any issues.
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PCV levels can be affected by the shape of red blood cells.
PCV levels can be affected by the shape of red blood cells.
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EDTA prevents clotting by adding ionic calcium to the blood sample.
EDTA prevents clotting by adding ionic calcium to the blood sample.
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Sodium Fluoride not only acts as an anticoagulant but also inhibits glycolytic enzymes.
Sodium Fluoride not only acts as an anticoagulant but also inhibits glycolytic enzymes.
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Citrate has no role in preventing the clotting of blood when used in ESR tests.
Citrate has no role in preventing the clotting of blood when used in ESR tests.
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Warfarin acts faster than Heparin in preventing blood clotting.
Warfarin acts faster than Heparin in preventing blood clotting.
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Heparin increases the effectiveness of antithrombin III when it binds with it.
Heparin increases the effectiveness of antithrombin III when it binds with it.
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The normal PCV range for males is between 44 and 50 percent.
The normal PCV range for males is between 44 and 50 percent.
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A higher than normal hematocrit can indicate lung or heart disease.
A higher than normal hematocrit can indicate lung or heart disease.
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The anticoagulant of choice for most hematological tests is Ethylene Glycol.
The anticoagulant of choice for most hematological tests is Ethylene Glycol.
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An increase in plasma volume is indicated by a low PCV.
An increase in plasma volume is indicated by a low PCV.
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PCV is affected by the number of white blood cells in the blood.
PCV is affected by the number of white blood cells in the blood.
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The centrifuge must reach adequate speed to provide accurate PCV results.
The centrifuge must reach adequate speed to provide accurate PCV results.
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Vitamin deficiencies can result in a higher than normal hematocrit.
Vitamin deficiencies can result in a higher than normal hematocrit.
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Centrifuging specimens should be done within 12 hours of collection to ensure accuracy.
Centrifuging specimens should be done within 12 hours of collection to ensure accuracy.
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