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MTECH Order of Draw Flashcards | StudBud
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MTECH Order of Draw
MTECH Order of Draw
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Answers
1
Which is the
best
tube for collecting an ethanol (ETOH) specimen?
Green top
Gray tube
Lavender top
Light blue top
2
The purpose of sodium citrate in specimen collection is to:
Protect coagulation factors
Accelerate coagulation
Preserve glucose values
Inhibit glucose breakdown
3
Chemistry tests are often collected into heparin tubes to...
Ensure adequate coagulation
Reduce turnaround time
Minimize the effects of hemolysis
Maximize diagnosis potential
4
Normal plasma is:
Cloudy, completely colorless fluid that contains 45% solutes
Slightly hazy, pale yellow fluid that is close to 55% water
Clear / slightly hazy, pale yellow fluid that is 90% water
Clear, colorless, watery fluid that contains 10% solutes
5
Inadequate mixing of an anticoagulant tube can lead to:
The sample clotting too fast
Hemolysis of the specimen
Microclots in the specimen
Lipemia of the specimen
6
Which of the following stopper colors identifies a tube used for coagulation testing?
Green
Lavender
Red
Light blue
7
Tubes designed by the maufacturer to be "short draw" are:
Made to only fill partially
Bad for coagulation testing
Are smaller than regular tubes
Tubes without anticoagulants
8
Which anticoagulant is in a PST?
Oxalate
Citrate
ACD
Heparin
9
Which of these tubes is drawn first?
Sodium citrate
Thrombin
EDTA
Glycolytic inhibitor
10
Which event during collection is
least
likely to delay clotting in a serum gel tube?
The specimen is chilled soon after being collected
Patient is taking anticoagulant medications
Patient has an elevated white blood cell count
Collection was difficult, hemolyzing red cells
11
The glass particles that are present in SST are...
Prevent hemolysis
Activate clotting
Deter clotting
Inhibit glycolysis
12
Mixing additives properly involves
Turning the wrist 180 degrees and back
Gently shaking the tube up and down
Turning the wrist 90 degrees and back
Slowly rocking them back and forth
13
Which specimen may require collection of a discard tube before the test specimen is collected?
Blood culture
Paternity
Drug testing
Coagulation
14
Identify the tubes needed to collect a CBC, PTT, STAT Potassium, in the correct order of draw.
Lavender, SST, royal blue
Gold, yellow, light blue
Red, gray, light blue
Light blue, green, lavender
15
A separator gel prevents glycolysis:
When the specimen is thoroughly mixed
After the specimen has been centrifuged
As soon as the specimen is collected
In tubes used for serum samples only
16
Which tube is drawn first?
EDTA
Na Citrate
Heparin
SPS
17
Tests performed on plasma samples are...
Collected in tiger tubes
Hematology / Serology tests
Obtained from clotted blood
Drawn into anticoagulant tubes
18
A serum specimen is requested. Which evacuated tube can be used to collect it?
SST
PST
PPT
EDTA
19
What happens if you mix your tubes too vigorously?
No effect
Lipemia
Hemolysis
Jaundice
20
Serum:
Can be used for most hematology tests
has a very deep yellow color
Is collected in a nonanticoagulant tube
Contains the clotting factor fibrinogen
21
Which additive can be found in four separate tubes with different stopper colors?
EDTA
Heparin
Sodium citrate
Potassium oxalate
22
Which type of test is
most
affected by tissue thromboplastin contamination?
Microbiology
Serology
Chemistry
Coagulation
23
What is an aliquot?
Specimen being prepared for testing
Portion of a specimen being used for testing
A tube used to balance a centrifuge
A filter that separates serum from formed elements
24
Which of the following STAT tests is usually collected in a lithium heparin tube?
Type and screen
Prothrombin time
CBC
Electrolyte panel
25
Which of the following is an anticoagulant?
Thrombin
Oxalate
Phosphate
Silica
26
Which of the following tests would be most affected by the carryover of K2EDTA?
Glucose
BUN
Potassium
Sodium
27
Which department would most likely perform testing on a specimen collected in an SPS tube?
Microbiology
Chemistry
Hematology
Coagulation
28
A pink top tube containing EDTA is usually used for:
Blood bank tests
Coagulation tests
Microbiology tests
Chemistry tests
29
Identify the tubes needed for a PT, STAT lytes, and BC in the proper order of draw.
Blood culture, light blue, PST
Light blue, lavender, yellow
Gold, yellow, light blue
SST, yellow, light blue
30
A
plastic
red top tube used to collect blood specimens usually contain:
Anticoagulants
Clot activators
Preservatives
No additive
