Timedora
Free Practice Quiz Question List

5 Tube Selection and Order-of-Draw Practice Online Quiz Questions

Use this free practice quiz with 20 questions to review 5 Tube Selection and Order-of-Draw Practice, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

A CBC is ordered. Which common tube is typically selected?

  1. A

    Light blue sodium citrate

  2. B

    Lavender EDTA

  3. C

    Gray fluoride/oxalate

  4. D

    Gold clot activator and serum-separator gel

02
True or false
1 point

A royal-blue tube is requested for trace-element testing. The cap color alone is enough to determine whether the tube is appropriate.

  1. A

    True

  2. B

    False

03
Written response
1 point

What additive is commonly used in light-blue tubes for coagulation testing?

04
Fill in the blank
1 point

Serum is collected in a tube that allows blood to ; the serum is then separated from the cells.

05
Choose one
1 point

A light-blue citrate tube is visibly underfilled. What is the appropriate response?

  1. A

    Mix it vigorously and use it as usual

  2. B

    Add blood from another tube until it reaches the fill line

  3. C

    Do not assume it is acceptable; follow laboratory policy about rejection or recollection

  4. D

    Treat it as a serum specimen instead

06
True or false
1 point

Shaking an additive tube vigorously can damage red cells and contribute to hemolysis.

  1. A

    True

  2. B

    False

07
Written response
1 point

In the standard venous order of draw, which specimen category comes after sodium citrate tubes and before heparin tubes?

08
Choose all
1 point

Which actions help prevent hemolysis during specimen collection and handling? Select all that apply.

  1. A

    Let the skin antiseptic dry before collection

  2. B

    Shake tubes vigorously to distribute additives

  3. C

    Avoid forceful aspiration or transfer

  4. D

    Handle tubes gently

09
Fill in the blank
1 point

For a light-blue citrate tube, filling to the required volume helps maintain the correct .

10
Choose one
1 point

A test requires a specimen collected with an anticoagulant and separated from the cells. Which specimen type does this describe?

  1. A

    Serum, because it is collected in a tube that allows blood to clot

  2. B

    Plasma, because it is collected with an anticoagulant and separated from the cells

  3. C

    Whole blood, because its cellular components are separated before testing

  4. D

    Serum, because it is collected in an anticoagulant tube

11
Choose all
1 point

Which statements about yellow tubes and their uses are supported? Select all that apply.

  1. A

    Some yellow tubes contain ACD

  2. B

    Every yellow tube contains the same additive

  3. C

    Some genetic or HLA testing uses a yellow tube when ACD is specified

  4. D

    Some blood-culture systems use SPS

12
Open ended
1 point

State the standard venous order of draw from first to last, and explain why this sequence is used.

13
Choose one
1 point

A specimen was collected in the wrong tube for the requested test. What should the collector do?

  1. A

    Proceed with testing because the specimen is already collected

  2. B

    Consult the laboratory rather than assuming the specimen is acceptable

  3. C

    Relabel the tube to match the requisition without checking

  4. D

    Transfer the specimen into the requested tube

14
Choose one
1 point

A test uses blood without separating its cellular components. Which specimen type is being tested?

  1. A

    Serum

  2. B

    Plasma

  3. C

    Whole blood

  4. D

    Citrated plasma

15
Choose one
1 point

A CBC is ordered. Which common tube is typically selected, subject to the laboratory's test-specific requirements?

  1. A

    Light blue sodium citrate

  2. B

    Lavender EDTA

  3. C

    Gray sodium fluoride with potassium oxalate

  4. D

    Gold clot activator and serum-separator gel

16
Choose one
1 point

During one venipuncture, a collector needs blood cultures and a lavender EDTA tube. Which sequence follows the standard order of draw?

  1. A

    Collect the blood cultures first, then the lavender tube.

  2. B

    Collect the lavender tube first, then the blood cultures.

  3. C

    Collect either first because their additives are the same.

  4. D

    Collect the lavender tube first unless it is filled to its line.

17
Choose one
1 point

PT/INR and aPTT are ordered. Which common tube and collection check are appropriate?

  1. A

    Lavender EDTA; fill it to prevent hemolysis.

  2. B

    Green heparin; fill it to preserve the serum-to-additive ratio.

  3. C

    Light-blue sodium citrate; fill it to maintain the required blood-to-additive ratio.

  4. D

    Gray fluoride/oxalate; fill it to allow the blood to clot.

18
True or false
1 point

True or false: A serum tube should be treated as an anticoagulated plasma tube because both are separated from blood cells.

  1. A

    True

  2. B

    False

19
Written response
1 point

What is the common additive in a lavender or purple tube used for a CBC?

20
Written response
1 point

For a light-blue citrate tube, what ratio can be altered by an insufficient fill and thereby affect coagulation results?