Phlebotomy Knowledge
Most commonly used gauge needle for venipuncture
21g
Binds calcium to prevent clotting
EDTA
Shaking, rather than inverting will cause this to happen to the specimen
Hemolysis
CBC
Lavender tube
Heel Bone
Calcaneus
What angle should venipuncture needle be inserted
15-30 degrees
Coagulation studies
Sodium Citrate
Procedure for proper disposal of used needles
Discarding safety needles/collection device as intact unit
Color tube for coagulation studies
Light Blue Tube
Needle withdrawn before the tourniquet
Hematoma
Tourniquet left on too long
Hemoconcentration
SPS
Equipment for patients with fragile, easy to collapse veins
Syringe and Needle
SST
Serum Separator tube
What vein lies on top of the Brachial Artery
Basilic
Term for hollow tube inside needle's shaft
Lumen
No additive
Red Glass Tube
How far from the venipuncture site should the tourniquet be placed
3 to 4 inches
Maximum depth for heel stick
2mm
Tightly tied tourniquet might cause this
Petechiae
Antiseptic may affect results of potassium, bilirubin from a dermal puncture
Povidone Iodine
CBC
EDTA
How should needle be inserted for venipuncture
Bevel up, smooth, quick motion
9 parts blood, 1 part sodium citrate
Light Blue Tube
Drawing excessive amounts of blood from patients puts them at risk for
Iatrogenic Anemia