Clinical Biochemistry Sample Collection Process

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What is the nature of many tests in clinical biochemistry?

They involve analysis of hair samples and skin swabs

They are limited to venous blood and capillary blood

They include whole blood, serum, plasma, urine, feces, sweat, saliva, and body fluids (correct)

They focus solely on blood and urine specimens

What is the importance of the process of sample collection?

Use of advanced technology, quick processing time, and low cost

Multiple layers of sample collection, extensive documentation, and delayed delivery to the laboratory

Accurate request form, correct sample collection technique, correctly labeled specimens, and speedy delivery to the laboratory (correct)

Random selection of samples, no labeling required, and minimal documentation

Which specimen is usually the specimen of choice for blood analysis?

Arterial blood

Venous blood (correct)

Capillary blood

Sweat

How is plasma obtained?

By taking whole blood into an anticoagulant Signup and view all the answers

What is the method for obtaining venous blood specimen for analysis?

Venipuncture Signup and view all the answers

What represents the liquid part of the blood?

Plasma Signup and view all the answers

What is the clear liquid that can be separated from clotted blood?

Serum Signup and view all the answers

Which factor can affect the concentration of plasma protein and the substances bound to them?

Posture Signup and view all the answers

What effect does maintaining occlusion with a tourniquet have during venipuncture?

Increases the rate of passage of proteins from the intravascular to extravascular compartment Signup and view all the answers

Why should blood be taken from the opposite arm if the patient is receiving an intravenous infusion fluid?

To prevent interference with biochemical assays Signup and view all the answers

Which type of anticoagulant should not be used for calcium estimation?

EDTA Signup and view all the answers

What is defined as the disruption of the RBCs membrane and results in the release of hemoglobin?

Hemolysis Signup and view all the answers

What may interfere with chemical reactions used in creatinine assays?

$K^+$-losing diuretics Signup and view all the answers

Clinical Biochemistry Sample Collection Process

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Questions and Answers

What is the nature of many tests in clinical biochemistry?

What is the importance of the process of sample collection?

Which specimen is usually the specimen of choice for blood analysis?

How is plasma obtained?

What is the method for obtaining venous blood specimen for analysis?

What represents the liquid part of the blood?

What is the clear liquid that can be separated from clotted blood?

Which factor can affect the concentration of plasma protein and the substances bound to them?

What effect does maintaining occlusion with a tourniquet have during venipuncture?

Why should blood be taken from the opposite arm if the patient is receiving an intravenous infusion fluid?

Which type of anticoagulant should not be used for calcium estimation?

What is defined as the disruption of the RBCs membrane and results in the release of hemoglobin?

What may interfere with chemical reactions used in creatinine assays?

What is usual to make it easier to enter the vein with the needle during venipuncture?

Where should laboratories accept blood for accurate testing?

What does hemolysis result in?

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