Phlebotomy Equipment and Infection Prevention

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What is the primary purpose of the retractable sleeve on the tube end of ETS multisampling needles?

To ensure that the correct volume of blood is collected

To provide a safety feature to prevent accidental needlesticks

To allow the needle to be screwed into the holder

To prevent leakage of the collected blood sample (correct)

Which of the following is a key advantage of the Butterfly method (Winged Infusion System) over using a needle and syringe?

Eliminates the need for an evacuated tube holder

Requires less skill and dexterity from the healthcare provider

Allows for easier manipulation and a shallower angle of needle insertion (correct)

Provides a larger volume capacity for blood collection

What is the primary purpose of the tube holder in an Evacuated Tube System (ETS)?

To ensure that the correct volume of blood is collected for each test

To provide a safety feature to prevent accidental needlesticks

To secure the evacuated tube and prevent leakage

To allow for the collection of multiple blood samples in a single venipuncture (correct)

Which of the following factors is NOT mentioned as a consideration when selecting the size of evacuated tubes to use?

Type of additive in the tube Signup and view all the answers

What is the primary purpose of the safety features on ETS tube holders and multisampling needles?

To prevent accidental needlesticks and protect healthcare providers Signup and view all the answers

What is the primary advantage of using evacuated tubes (as opposed to the syringe method) for blood collection?

Evacuated tubes allow for the collection of multiple samples in a single venipuncture Signup and view all the answers

What is the purpose of using alcohol-based rinses, gels, & foams?

To replace hand washing if hands are not visibly soiled Signup and view all the answers

Why should one avoid using cotton balls in the context of phlebotomy?

They tend to stick and are not ideal for holding pressure over a blood collection site Signup and view all the answers

What color are biohazard bags designated for waste garbages that contain sharps?

Red Signup and view all the answers

What are glass microscope slides typically used for in the context of phlebotomy?

Measuring bleeding and clotting time Signup and view all the answers

When should bandages be used in the context of phlebotomy?

Over blood collection sites once bleeding has stopped Signup and view all the answers

What is the primary purpose of needle & sharps disposal containers in the context of phlebotomy?

To dispose of used needles and sharps safely Signup and view all the answers

Why can't Potassium Oxalate be used in blood counting?

It causes shrinkage of Red Blood Cells (RBC) Signup and view all the answers

Which anticoagulant is most commonly used and has a lifespan of 35 days?

Citrate phosphate dextrose (CPD) Signup and view all the answers

What is the main function of Sodium fluoride as an anticoagulant?

Preserves glucose for up to 3 days Signup and view all the answers

Why is serum considered more stable than plasma with certain substances?

Serum is more compatible with most reagents Signup and view all the answers

What is the main disadvantage of using Potassium oxalate as an anticoagulant?

Shrinks Red Blood Cells (RBC) Signup and view all the answers

Which substance prevents glycolysis and preserves glucose for only 3 days?

Sodium fluoride Signup and view all the answers

Which type of activator is used to provide more surface for platelet activation?

Glass (silica) particles Signup and view all the answers

What is the primary reason why serum is considered the best specimen?

All of the above Signup and view all the answers

What is the purpose of using Trace Element-Free Tubes?

For trace element tests, toxicology studies, and nutrient determinations Signup and view all the answers

What is the primary purpose of the Thixotropic Gel Separator?

To prevent cells from continuing to metabolize substances Signup and view all the answers

Why should blood cultures be collected first in the order of draw?

Both a and b Signup and view all the answers

What is the purpose of drawing a few millimeters of blood into a plain red top tube before collecting the coagulation specimen?

To prevent contamination of the coagulation specimen by tissue thromboplastin Signup and view all the answers

What is the primary function of sodium citrate in ESR (Erythrocyte Sedimentation Rate) estimation by the Westergren Method?

To prevent blood coagulation by binding calcium Signup and view all the answers

What is the recommended concentration of sodium citrate solution for coagulation studies?

3.2% Signup and view all the answers

Which form of EDTA (Ethylenediaminetetraacetic acid) is recommended by both CLSI (Clinical and Laboratory Standards Institute) and ICSH (International Council for Standardization in Hematology) for hematological studies?

K2EDTA (spray dried) Signup and view all the answers

What is the primary concern with underfilled EDTA blood collection tubes?

Excessive EDTA can cause damage to red blood cell membranes Signup and view all the answers

Which anticoagulant is recommended for blood gas analysis and Osmotic Fragility Test (OFT)?

Heparin Signup and view all the answers

What is the potential issue associated with the use of heparin as an anticoagulant?

It can cause clumping of white blood cells and platelets Signup and view all the answers