Blood Collection Techniques and Tube Usage Quiz

Lavender tubes contain EDTA, an anticoagulant, to prevent clotting.

Tourniquets temporarily restrict blood flow, making veins more visible and accessible for venipuncture.

Inverting mixes blood with additives uniformly, ensuring accurate test results and preventing clotting or separation.

Light blue tubes contain sodium citrate, an anticoagulant used for coagulation studies by binding calcium ions.

Phlebitis, inflammation of the vein, is a common complication of venipuncture, often due to irritation from the needle or catheter.

EDTA is an anticoagulant used in green-top tubes to prevent clotting.

A 20-gauge needle is commonly used for venipuncture in adults due to its balance of flow rate and patient comfort.

The cephalic vein in the antecubital fossa is commonly used for venipuncture due to its accessibility and size.

EDTA stands for Ethylenediaminetetraacetic acid, which is an anticoagulant commonly used in blood collection tubes.

Gray-top tubes contain sodium fluoride and potassium oxalate, which preserve glucose levels in blood samples.

The correct order of draw ensures sample integrity by minimizing cross-contamination and preserving sample quality.

Using a small-gauge needle is not a common cause of specimen hemolysis; rather, it can reduce the risk due to less damage to blood cells.

Raising the legs and lowering the head helps restore blood flow to the brain, aiding in the recovery of a patient experiencing syncope.

Gray-top tubes contain sodium fluoride, which inhibits glycolysis, preserving glucose levels for accurate testing.