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Free Practice Quiz Question List

2 Tube Colors and Additives Online Quiz Questions

Use this free practice quiz with 20 questions to review 2 Tube Colors and Additives, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

A red-top tube is always additive-free, whether it is made of glass or plastic. True or false?

  1. A

    True

  2. B

    False

02
True or false
1 point

A tube without anticoagulant generally needs time for the blood to clot before centrifugation. True or false?

  1. A

    True

  2. B

    False

03
Written response
1 point

What specimen type is commonly used for a CBC collected in a lavender-top EDTA tube?

04
Choose one
1 point

A laboratory requests a specimen for a PT/INR test. Which tube is commonly used?

  1. A

    Green-top heparin tube

  2. B

    Light-blue sodium-citrate tube

  3. C

    Lavender-top EDTA tube

  4. D

    Gray-top glycolysis-inhibitor tube

05
Fill in the blank
1 point

For certain specialized cellular or genetic studies, a yellow-top tube may contain .

06
Written response
1 point

What additive class is commonly used in green-top tubes?

07
Choose one
1 point

In the usual order of draw, which tube category follows green heparin tubes and comes before gray tubes?

  1. A

    Serum tubes

  2. B

    Gray glycolysis-inhibitor tubes

  3. C

    Lavender/purple or pink EDTA tubes

  4. D

    Sterile blood culture bottles

08
Choose all
1 point

Select all accurate tube descriptions.

  1. A

    Red tubes may have no additive in some glass tubes or a clot activator in some plastic tubes; they commonly produce serum.

  2. B

    Gold or tiger-top SST tubes commonly contain a clot activator and gel separator and produce serum.

  3. C

    Pink tubes commonly contain EDTA and are used for blood-bank testing such as type and screen.

  4. D

    Black tubes commonly contain sodium citrate and may be used for ESR where specified.

  5. E

    Green tubes commonly contain sodium citrate and are the usual tubes for coagulation testing.

  6. F

    Gray tubes commonly contain a clot activator and gel separator to produce serum.

09
Choose one
1 point

A test requires rapid serum preparation. Which tube is commonly intended for that purpose?

  1. A

    A lavender EDTA tube, used for selected tests requiring rapid serum preparation

  2. B

    An orange RST tube, used for selected tests requiring rapid serum preparation

  3. C

    A gray tube, used to produce citrated plasma for rapid serum preparation

  4. D

    A light-blue citrate tube, used to produce serum for rapid preparation

10
Fill in the blank
1 point

Because the blood-to-additive ratio is critical in a light-blue sodium-citrate tube, can invalidate the specimen.

11
Choose all
1 point

Select all appropriate collection and handling practices.

  1. A

    Verify the test's specimen requirements before choosing the tube.

  2. B

    Fill the tube to the required volume, paying particular attention to light-blue citrate tubes.

  3. C

    Gently invert additive tubes promptly as directed by the manufacturer or laboratory.

  4. D

    Label each tube at the patient's side according to facility policy.

  5. E

    Choose a tube by its color alone without checking its label or test instructions.

  6. F

    Shake additive tubes vigorously to mix them quickly.

12
Choose one
1 point

A trace-element test specifies a particular metal-free collection tube. What is the best action?

  1. A

    Use any royal-blue tube because all royal-blue tubes have the same additive.

  2. B

    Use a generic royal-blue tube even if the test specifies a metal-free container.

  3. C

    Use the exact collection tube specified for the trace-element test.

  4. D

    Use a gray-top tube because it is always free of trace-element contamination.

13
Choose one
1 point

A glucose test's instructions specify a tube containing a glycolysis inhibitor. Which tube is commonly used?

  1. A

    Gray-top tube

  2. B

    Gold or tiger-top SST tube

  3. C

    Pink-top EDTA tube

  4. D

    Orange RST tube

14
Open ended
1 point

Explain the difference among serum, plasma, and whole blood. Why should a collector verify the test's specimen requirements rather than rely on tube color alone?

15
Written response
1 point

What does the abbreviation ACD stand for in the name of the additive used in a yellow ACD tube?

16
True or false
1 point

Serum is the liquid portion collected after blood clots.

  1. A

    True

  2. B

    False

17
Written response
1 point

Which additive is commonly used in lavender or purple blood collection tubes?

18
Choose one
1 point

A glucose test's instructions specify a tube containing a glycolysis inhibitor. Which collection choice is most appropriate?

  1. A

    Use a red tube because it always contains no additive.

  2. B

    Use any tube labeled royal blue because it is suitable for all chemistry tests.

  3. C

    Use a gray tube if the laboratory's instructions specify it for the glucose test.

  4. D

    Use a yellow ACD tube because it is the standard tube for glucose testing.

19
Choose one
1 point

A laboratory requests a specimen for PT/INR. Which tube and specimen pairing is commonly used?

  1. A

    Lavender-top EDTA whole blood

  2. B

    Light-blue sodium-citrate citrated plasma

  3. C

    Gray-top glycolysis-inhibitor whole blood

  4. D

    Gold-top serum

20
Choose one
1 point

After collecting an additive tube, which handling approach best follows the stated collection guidance?

  1. A

    Shake vigorously to ensure the additive is distributed.

  2. B

    Leave the tube unmixed until it reaches the laboratory.

  3. C

    Gently invert it promptly as many times as the manufacturer or laboratory specifies.

  4. D

    Centrifuge it immediately without mixing.