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Phlebotomy Multiple Choice Quiz: Chapters 7-9

Quick, free phlebotomy practice test. Instant results and answer feedback.

Editorial: Review CompletedCreated By: Wraith PhoenixUpdated Aug 25, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration showing blood collection tube and syringe next to open quiz booklet on sky blue background

This phlebotomy multiple choice quiz for Chapters 7-9 helps you check core skills like order of draw, tube additives, and patient ID. Get instant scoring with brief explanations. Keep learning with a phlebotomy practice test, try a phlebotomy order of draw quiz, or review a phlebotomy quiz with answers.

Which additive is in a lavender-top tube used for complete blood count testing?
Lithium heparin
EDTA (ethylenediaminetetraacetic acid)
Sodium citrate
Sodium fluoride
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For routine antecubital venipuncture with a straight needle, what is the recommended needle gauge for most adult patients?
21 gauge
27 gauge
25 gauge
18 gauge
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What is the maximum recommended tourniquet time to minimize hemoconcentration in routine blood collection?
1 minute
30 seconds
3 minutes
2 minutes
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Which vein in the antecubital fossa is generally preferred first for venipuncture due to size and stability?
Basilic vein
Median cubital vein
Dorsal hand vein
Cephalic vein
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What is the correct angle of insertion for a routine venipuncture with a straight needle?
15 to 30 degrees
45 to 60 degrees
5 to 10 degrees
35 to 45 degrees
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Which additive is present in a gray-top tube typically used for glucose testing?
Lithium heparin with gel
Sodium citrate only
EDTA only
Sodium fluoride with potassium oxalate
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The correct order of draw for venipuncture using evacuated tubes is best represented by which sequence?
Red, light blue, blood cultures, green, lavender, gray
Blood cultures, light blue, red/SST, green, lavender, gray
Blood cultures, red/SST, light blue, green, gray, lavender
Light blue, blood cultures, red/SST, lavender, green, gray
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A light blue-top tube must be filled to maintain a 9:1 blood-to-additive ratio. What is the additive in this tube?
Lithium heparin
Sodium citrate
Sodium fluoride
Potassium oxalate
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Which action best prevents hemolysis during venipuncture?
Using a needle that is too small for the vein
Pulling the plunger of a syringe rapidly
Vigorously inverting tubes 20 times
Allowing alcohol to air-dry before puncture
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Which specimen requires protection from light immediately after collection?
Serum potassium
Bilirubin
Total protein
Serum sodium
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For an infant heel puncture, what is the maximum lancet depth to avoid bone injury?
2.0 mm
1.0 mm
4.0 mm
3.0 mm
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What is the correct number of gentle inversions for a light blue-top coagulation tube?
12 inversions
5 to 6 inversions
8 to 10 inversions
3 to 4 inversions
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Which step is appropriate when collecting blood cultures using a butterfly set?
Use alcohol only and skip iodine or chlorhexidine
Fill the aerobic bottle first to account for air in the tubing
Fill the anaerobic bottle first to prevent air entry
Do not cleanse the site with antiseptic
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Which collection is best for a lactic acid test with minimal preanalytical error?
Have the patient clench a fist repeatedly
Collect without prolonged tourniquet, place on ice promptly
Use povidone-iodine as the sole skin cleanser
Apply a tourniquet for 3 minutes before collection
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Which test specimen must be kept warm at 37 C from collection to analysis?
Serum cortisol
Cold agglutinin
Ammonia
Triglycerides
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In capillary collection, which test is typically collected first to minimize platelet clumping effects?
CBC
Blood cultures
Serum chemistry panel
Coagulation studies
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Which statement about drawing from an arm with an IV infusion is correct?
Draw from the same vein as the IV
Draw below the IV after stopping infusion for at least 2 minutes
No special precautions are needed
Draw above the IV site to speed collection
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When using a butterfly for a single light blue-top tube for coagulation testing, what should you do first?
Use a discard tube to fill the tubing before the light blue tube
Apply the tourniquet for 2 to 3 minutes
Skip tube inversion to avoid clotting
Use a red-top tube for coag tests instead
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Which site is preferred for arterial blood gas collection by trained personnel?
Dorsal foot vein
Basilic vein
Radial artery after a positive collateral circulation test
Brachial artery without testing collateral flow
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For arterial puncture, verifying collateral circulation with an appropriate test is a safety requirement.
False
True
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Study Outcomes

  1. Understand Phlebotomy Protocols -

    Recall and explain the correct order of draw, tube additives, and essential steps introduced in phlebotomy quizlet chapter 7 to ensure accurate specimen collection.

  2. Apply Venipuncture Techniques -

    Demonstrate proper needle selection, site preparation, and phlebotomy procedures to perform safe and effective blood draws in clinical scenarios.

  3. Analyze Patient Assessment Factors -

    Evaluate patient history, vein selection criteria, and potential complications to adapt your approach for diverse patient needs and conditions.

  4. Demonstrate Sample Handling and Labeling -

    Show competence in labeling, storing, and transporting specimens according to best practices to maintain sample integrity and prevent errors.

  5. Evaluate Safety and Infection Control Measures -

    Identify and implement standard precautions, sharps disposal, and equipment sterilization protocols to minimize risk of contamination and injury.

  6. Differentiate Common Laboratory Tests -

    Compare the requirements, purposes, and interpretation guidelines for routine tests covered in chapters 7 - 9 to enhance your test-ordering and result-analysis skills.

Cheat Sheet

  1. Order of Draw -

    Focus on the CLSI-recommended sequence to prevent cross-contamination of additives: blood culture, citrate, serum, heparin, EDTA, and glycolytic inhibitors. Use the mnemonic "Boys Love Ravishing Girls But Usually Prefer Pink" to recall tube colors. Practicing this sequence on a phlebotomy quizlet chapter 7 flashcard helps reinforce muscle memory.

  2. Needle Gauge and Angle -

    Selecting the correct gauge (21 - 23 gauge for adult patients) ensures optimal blood flow and minimal hemolysis. Insert at a 15° - 30° angle targeting the center of the vein, and practice this on a phlebotomy chapter 9 quiz simulation or clinical lab session. Mastering angle and gauge helps you maintain patient comfort and specimen integrity.

  3. Patient Identification and Prep -

    Verify two identifiers (name and date of birth) against the test order and ID band before phlebotomy to meet Joint Commission standards. Cleanse the site with 70% isopropyl alcohol using a circular motion and allow it to air-dry for 30 seconds to reduce contamination. This step review from quizlet phlebotomy chapter 8 underscores patient safety and sample reliability.

  4. Tube Mixing and Handling -

    Invert additive tubes gently 5 - 10 times immediately after collection per manufacturer guidelines (for example, 8 - 10 inversions for EDTA) to avoid clotting or hemolysis. Never shake tubes vigorously; instead roll them between your hands for even mixing. Incorporate this into your chapter 7 phlebotomy practice test to perfect your technique.

  5. Hemolysis Prevention Techniques -

    Minimize tourniquet time to under one minute and avoid using small-bore needles on large-bore veins to reduce red cell rupture. If hemolysis occurs, repeat the draw with a new needle and tube, and document any preanalytical errors. These tips from the Clinical and Laboratory Standards Institute help you score high on a phlebotomy quiz for chapters 7-9.

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