Blood Collection Techniques

Flashcards covering key vocabulary and concepts related to blood collection techniques and procedures.

Venipuncture

Used to collect large volumes of blood. Three methods include evacuated tube/vacutainer, syringe and needle, and butterfly.

Test Order (Requisition)

Must be an order from a provider. Includes ordering provider, test and test code, diagnosis code, special specimen requirements, patient demographics, and insurance or billing information.

Timed Specimens

Crucial for drug level monitoring, confirming patient medication dose, and compliance.

Fasting

Nothing but water for 8-12 hours prior to testing. Some blood tests are affected by food and/or beverages (triglycerides, glucose)

Basal State

Early morning specimen (after sleep), 12 hours after the last ingestion of food or liquids

Postprandial

After a meal

Antecubital Area Veins

Median cubital (preferred), Cephalic (best choice in obese patients), Basilic (greatest risk of complications)

Tourniquet

Allows for hemostasis. Place 3-4” above the draw site. Max 60 seconds.

Hematoma

Most common complication of venipuncture. Occurs due to failure to apply pressure.

Blood Collection Volume

Use capillary puncture for small volume requirements. Larger volumes use venipuncture.