Hematology Instrumentation Quiz

Emma is conducting an experiment in her lab to understand the principle of electromechanical detection. What method does she use in her setup?

• Involves two wire loops of electrode

• Uses light scattering

• Manual visualization of clot

Answer explanation

Emma's experiment on electromechanical detection involves using two wire loops of electrode, which is a common method for detecting electrical signals in various applications, making it the correct choice.

The following are the disadvantages of photo-optical detection EXCEPT:

• Affected by icteric sample

• Sensitive to fibrinogen

• Affected by hemolysis

Answer explanation

The correct answer is 'Sensitive to fibrinogen' because it is not a disadvantage of photo-optical detection. The other options, 'Affected by icteric sample' and 'Affected by hemolysis', are indeed disadvantages.

The following variables affect coagulation testing and QC in Hannah's laboratory EXCEPT:

• Instrument

• Specimen

• Reagents

• Controls

• Hannah

Mia is preparing for her medical exam and comes across a question about blood coagulation. She needs to know what the normal value for One Stage Prothrombin Time is.

• 10-12 seconds

• 6-10 seconds

• 0.8-1.0

Answer explanation

The normal value for One Stage Prothrombin Time is 10-12 seconds. This range indicates the time it takes for blood to clot, which is crucial for assessing coagulation function.

Sophia is studying blood coagulation and comes across a test called Stypven Time. What is the use of Stypven Time?

• To determine the problem in VII

• To measure clotting time

• To assess fibrinogen levels

Answer explanation

Stypven Time is a test used to measure clotting time, specifically assessing the extrinsic pathway of coagulation. It helps identify issues related to clot formation, making 'To measure clotting time' the correct choice.

During a lab session, Benjamin is studying the Stypven Time as part of his hematology course. What is the normal value for Stypven Time?

• 6-10 seconds

• 10-15 minutes

• 2-6 minutes

Answer explanation

The normal value for Stypven Time is 6-10 seconds, which indicates the time taken for clot formation in the presence of tissue factor. The other options are incorrect as they represent different time measurements.

During a biology lab, Samuel is learning about different blood sampling techniques. He comes across a method called the Slide/Drop Method. What is the principle of the Slide/Drop Method?

• Utilizes dermal puncture

• Uses venous blood

• Involves two wire loops

Answer explanation

The Slide/Drop Method is based on utilizing dermal puncture to collect blood samples, typically from a fingertip, making it suitable for small volume tests.

Ethan is conducting an experiment using the Capillary Tube Method to measure the time it takes for a liquid to rise in a capillary tube. What is the normal value for this method?

• 0-4 minutes

• 10-15 minutes

• 2-6 minutes

Answer explanation

The normal value for the Capillary Tube Method is typically 0-4 minutes, as this range reflects the expected time for liquids to rise in capillary tubes due to capillary action.

During a medical training session, Elijah learns about various tests used in monitoring patients on anticoagulant therapy. He comes across a test called Activated Clotting Time. What is the purpose of Activated Clotting Time?

• Used for heparin therapy monitoring

• To measure fibrinogen levels

• To assess platelet function

Answer explanation

Activated Clotting Time is primarily used for monitoring heparin therapy, as it measures the time it takes for blood to clot in response to heparin. This helps ensure patients are within the therapeutic range.

Nora is preparing for her upcoming surgery and her doctor explains the importance of monitoring her Activated Clotting Time (ACT) during the procedure. What is the normal value for Activated Clotting Time (ACT)?

• 75-120 Seconds

• 140-185 Seconds

• 20-45 Seconds

• 60-120 Seconds

Answer explanation

The normal value for Activated Clotting Time (ACT) is 75-120 seconds. This range is crucial for monitoring during surgery to ensure proper blood coagulation and minimize the risk of excessive bleeding.