Clinical Biochemistry Sample Collection

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What is the liquid part of the blood, making up about half of the blood volume?

EDTA

Heparin

Plasma (correct)

Serum

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

Arterial puncture

Venipuncture (correct)

Skin puncture

Plasma separation

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

Plasma

Arterial blood

Venous blood (correct)

Capillary blood

Which sample is NOT typically used for blood analysis?

Saliva Signup and view all the answers

What is the importance of the process of sample collection in clinical biochemistry?

Accurate request form and correctly labeled specimens Signup and view all the answers

In young children, which method is frequently used to obtain capillary blood?

Skin puncture 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 of the following can affect the concentration of plasma proteins and the substances bound to them?

Posture (standing up or supine) Signup and view all the answers

What effect does maintaining venous stasis for a prolonged time have on plasma concentration?

Increases plasma protein concentration Signup and view all the answers

What effect does performing venipuncture on the same arm receiving an intravenous infusion have on biochemical assays?

May affect the validity of results Signup and view all the answers

What should laboratories do regarding blood containers to ensure accurate testing?

Use only correct containers for blood Signup and view all the answers

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

Hemolysis Signup and view all the answers

Which factor may lead to hypokalaemia for a few hours in some patients?

Use of potassium-loosing diuretics Signup and view all the answers

What is the substance released into the circulation by palpation of the prostate through rectal examination?

$eta$-Acid phosphatase Signup and view all the answers

What happens to the concentration of plasma proteins and substances bound to them when posture changes from standing up to supine?

Increases in standing up position Signup and view all the answers

What is the purpose of applying a tourniquet proximal to the venipuncture site?

To make it easier to enter the vein with a needle Signup and view all the answers

Clinical Biochemistry Sample Collection

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