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Free Practice Quiz Question List

4 Collection Tubes and Order of Draw Online Quiz Questions

Use this free practice quiz with 20 questions to review 4 Collection Tubes and Order of Draw, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

A laboratory requests a whole-blood specimen for a CBC. Which tube is the appropriate choice from these options?

  1. A

    Light blue, containing sodium citrate

  2. B

    Lavender, containing EDTA

  3. C

    Green, containing heparin

  4. D

    Gray, commonly containing sodium fluoride and potassium oxalate

02
True or false
1 point

A collector shakes an additive tube vigorously to mix it quickly. This is an appropriate substitute for the gentle mixing specified by the tube manufacturer.

  1. A

    True

  2. B

    False

03
Written response
1 point

When local instructions require a discard tube before collecting a citrate specimen with a winged collection set, what is the discard tube used to do? Enter the purpose as a brief phrase.

04
Fill in the blank
1 point

Complete the first two steps of a common capillary microcollection sequence: collect first, followed by .

05
Choose one
1 point

A selected chemistry test requires a plasma-separator tube. Which option matches that requirement?

  1. A

    Red tube with no additive

  2. B

    Lavender tube with EDTA

  3. C

    Light-green tube with lithium heparin and separator gel

  4. D

    Gray tube with a glycolytic inhibitor

06
True or false
1 point

A collector is given a royal-blue tube and assumes its additive and intended use based only on its color. Is that a reliable approach?

  1. A

    True

  2. B

    False

07
Choose one
1 point

A laboratory’s test instructions specify a gray tube for a requested test. Which test is commonly associated with gray tubes?

  1. A

    CBC

  2. B

    Glucose

  3. C

    Blood-bank testing

  4. D

    Coagulation testing

08
Choose one
1 point

During a routine venous draw, the serum tubes have just been collected. Which group comes next in the general order of draw?

  1. A

    EDTA tubes

  2. B

    Glycolytic-inhibitor tubes

  3. C

    Heparin tubes

  4. D

    Blood cultures

09
Written response
1 point

What additive is listed for a light-blue tube commonly used to collect citrated plasma for coagulation tests?

10
Choose all
1 point

A collector is checking routine practices for specimen identification and contamination prevention. Select all appropriate actions.

  1. A

    Label each tube with the required patient identifiers and collection details.

  2. B

    Transfer blood from a full tube to a partially filled tube of another type.

  3. C

    Verify that the tube label and requisition match.

  4. D

    Avoid transferring blood between additive tubes.

11
Fill in the blank
1 point

If a light-blue citrate tube is underfilled, the changes, which can invalidate coagulation results.

12
Choose all
1 point

A collector is preparing to obtain a capillary specimen. Select all practices supported by the collection guidance.

  1. A

    Follow the device and laboratory instructions.

  2. B

    Assume every test can be collected by capillary sampling.

  3. C

    Avoid excessive squeezing of the puncture site.

  4. D

    Recognize that excessive squeezing can dilute the specimen with tissue fluid and increase hemolysis risk.

13
Open ended
1 point

Explain how a collector can reduce additive carryover during a multiple-tube venous draw, and describe one possible effect of additive contamination on test results.

14
Choose one
1 point

A test requires serum, and the laboratory specifies a tube with both clot activator and serum-separator gel. Which tube listed is the best match?

  1. A

    Green tube containing heparin for heparinized plasma

  2. B

    Gold tube with clot activator and serum-separator gel

  3. C

    Lavender tube containing EDTA for whole blood

  4. D

    Light-blue tube containing sodium citrate for coagulation testing

15
Choose one
1 point

A royal-blue tube is requested for specialized testing, but its additive is not apparent from its color. What should you do before collecting the specimen?

  1. A

    Choose the additive based only on the stopper color.

  2. B

    Check the tube label and the receiving laboratory’s test instructions.

  3. C

    Use the tube for any test that requires whole blood.

  4. D

    Transfer the specimen to a standard tube after collection.

16
True or false
1 point

True or false: Additive tubes should be shaken vigorously to mix them thoroughly.

  1. A

    True

  2. B

    False

17
Written response
1 point

What specimen type is collected in a heparin tube for selected chemistry tests?

18
Written response
1 point

What additive combination is commonly found in gray tubes?

19
Choose one
1 point

A laboratory requests whole blood for a complete blood count. Which tube is the best choice?

  1. A

    Light blue sodium citrate tube

  2. B

    Gold serum-separator tube

  3. C

    Lavender EDTA tube

  4. D

    Green heparin tube

20
Choose one
1 point

During a routine venous draw, which pair of tube groups is in the correct relative order?

  1. A

    Serum tubes before heparin tubes

  2. B

    Heparin tubes before serum tubes

  3. C

    EDTA tubes before serum tubes

  4. D

    Gray tubes before sodium citrate tubes