Venipuncture: Take Safe and Effective Blood Sample



Puncture into a vein to obtain a blood specimen for testing; the antecubital veins are the veins of choice because of ease of access.

Close up shot of a nurse inserting a needle into the patients arm and taking blood for further testing.


The liquid pumped by the heart through the arteries, veins, and capillaries. Blood is composed of a clear yellow fluid (plasma), formed elements, and cell types with different functions .

Blood cell:

Any of the formed elements of the blood, including red cells (erythrocytes), white cells (leukocytes), and platelets (thrombocytes). plasma The watery, straw-colored, fluid part of lymph and the blood in which the formed elements (blood cells) are suspended.


Plasma is made up of water, electrolytes, protein, glucose, fats, bilirubin, and gases and is essential for carrying the cellular elements of the blood through the circulation.


The clear and thin fluid part of blood that remains after coagulation. Serum contains no blood cells, platelets, or fibrinogen.

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