Module 5

Compounds added to biological specimens to prevent them from clotting or to preserve the constituents of a specimen.

Any substance that prevents blood from clotting

A prenatal test to detect birth defects that is performed at an early stage of pregnancy and involves retrieval and examination of tissue from the organ.

The sequential process by which the multiple coagulation factors of blood interact in the coagulation cascade, resulting in formation of an insoluble fibrin clot.

Variation that occurs in the amount of a substance during a 24-hour period.

Disruption of the red cell membrane causing release of hemoglobin and other components of red blood cells.

Disruption of the red cell membrane causing release of hemoglobin and other components of red blood cells.

The individual drawing a specimen of blood.

The puncture of a blood vessel to collect blood.

Factors that affect specimens before tests are performed and that can lead to error if not controlled; they are classified as controllable or uncontrollable.

A substance or preparation added to a specimen to prevent changes in the constituents of a specimen.

The non-cellular component of anticoagulated whole blood; plasma contains clotting factors.

The watery portion of blood that remains after coagulation has occurred and can be obtained after centrifugation

Collection of capillary blood usually from a pediatric patient by making a thin cut in the skin, usually at the heel of the foot.

Obstruction of the return of venous blood to the heart and distention of the veins; in phlebotomy, this is a temporary blockage caused by application of pressure, usually from a tourniquet.

usually the specimen of choice

Aside from venipuncture, blood samples can be collected using a skin puncture technique that can be done on

uses both the liquid portion of the blood called plasma and the cellular components

cellular components of blood

type of whole blood that is oxygenated and have uniform composition throughout the body

arterial blood is used in measuring:

why is syringe used in arterial blood collection instead of evacuated tubes

primary arterial sites

primary arterial sites