Basics
This term describes the substance measured in a lab test.
Analyte
The first drop of blood during a capillary puncture is treated this way.
Wiped away
The best vein choice for venipuncture.
Median cubital vein
The additive found in a lavender tube.
EDTA
The most common antiseptic for routine venipuncture.
70% isopropyl alcohol
This type of blood collection punctures a vein.
Venipuncture
The preferred fingers for adult capillary collection.
Middle or ring finger
The scientific name for the inside of the elbow.
Antecubital fossa
Tube color that contains sodium citrate.
Light blue
Why should tourniquets should not stay on longer than 60 seconds?
It causes hemoconcentration
Errors that occur before a specimen is tested.
Preanalytical errors
Why the index finger is avoided for capillary puncture.
It is calloused and has more nerve endings
The recommended venipuncture angle.
15–30 degrees
The tube collected first when drawing blood cultures.
Blood culture tube
What is the maximum amount of time a tourniquet should remain on a patient’s arm?
60 Seconds
The document that requests a lab test and gives patient info.
Requisition form
The maximum puncture depth for children in capillary collection.
2 mm
The vein that is last choice due to artery and nerve risk.
Basilic vein
Why tubes must be filled in the correct order.
To prevent additive carryover
Which specimen must be protected from light?
Bilirubin
This process tracks specimen handling for legal integrity.
Chain of custody
Bone infection that can occur if an infant heel bone is struck.
Osteomyelitis
The complication caused by blood leaking under the skin.
Hematoma
What gentle mixing of tubes after collection is called.
Inversion
What should a PCT do if a patient faints during a blood draw?
Stop draw
Release the tourniquet
Remove the needle