#1
Which antiseptic is commonly used for skin disinfection before blood collection?
Isopropyl Alcohol
ExplanationIsopropyl Alcohol is commonly used as an antiseptic to disinfect the skin before blood collection.
#2
During a venipuncture, what is the recommended angle for needle insertion?
45 degrees
ExplanationThe recommended angle for needle insertion during venipuncture is 45 degrees to minimize the risk of puncturing through the vein.
#3
Which additive is commonly found in a light blue top tube?
Sodium Citrate
ExplanationSodium Citrate is commonly found in a light blue top tube as an anticoagulant, used for coagulation studies.
#4
What is the recommended site for capillary puncture in infants?
Heel
ExplanationThe heel is the recommended site for capillary puncture in infants due to its relatively large blood supply and minimal discomfort.
#5
Which of the following is a common complication of improper tourniquet application?
Hematoma formation
ExplanationHematoma formation is a common complication of improper tourniquet application, resulting from excessive pressure or prolonged use.
#6
What is the purpose of using a tourniquet during blood collection?
To dilate veins and make them more visible
ExplanationA tourniquet is used during blood collection to constrict blood flow, dilating veins and making them more visible for venipuncture.
#7
Which tube is commonly used for collecting blood for a complete blood count (CBC)?
Lavender top tube
ExplanationA lavender top tube is commonly used for collecting blood for a complete blood count (CBC) as it contains EDTA, an anticoagulant.
#8
What is the purpose of a butterfly needle in blood collection?
To collect blood from fragile veins
ExplanationA butterfly needle is used in blood collection to access fragile veins, reducing the risk of vein collapse or damage.
#9
Which anticoagulant is commonly used in purple top tubes for blood collection?
EDTA
ExplanationEDTA (Ethylenediaminetetraacetic acid) is commonly used as an anticoagulant in purple top tubes for blood collection to prevent clotting and preserve cell morphology.
#10
Which blood collection tube is commonly used for glucose testing?
Gray top tube
ExplanationA gray top tube is commonly used for glucose testing as it contains an anticoagulant (sodium fluoride) and a preservative (potassium oxalate) to inhibit glycolysis.
#11
What is the most common complication during phlebotomy procedures?
Hematoma
ExplanationHematoma is the most common complication during phlebotomy procedures, characterized by localized bleeding under the skin.
#12
Which vein is often preferred for venipuncture in adults?
Median Cubital Vein
ExplanationThe median cubital vein is often preferred for venipuncture in adults due to its accessibility and stability.
#13
What is the primary purpose of the clot activator in a red top tube?
Facilitate serum separation
ExplanationThe clot activator in a red top tube facilitates serum separation by accelerating the clotting process, allowing serum to be isolated from the clot.
#14
Which of the following is a pre-analytical error in blood collection?
Mislabeling of tubes
ExplanationMislabeling of tubes is a pre-analytical error in blood collection that can lead to inaccurate test results or patient misdiagnosis.
#15
Which of the following is a common site for capillary puncture in adults?
Forearm
ExplanationThe forearm is a common site for capillary puncture in adults, as it has a sufficient blood supply and is relatively painless compared to other sites.