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10 Cards in this Set
- Front
- Back
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Why should a laboratory report form indicate the fact that a specimen has been collected by skin puncture?
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Some test results may vary depending on the source of the specimen.
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The maximum depth of a heel puncture recommended by the National Committee of Clinical Laboratory Standards (formerly NCCLS) is:
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2.0 mm
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In which of the following areas does skin puncture differe from routine venipuncture?
1. antiseptic used 2. patient identification 3. stopper color of collection tubes 4. none of the above |
4. none of the above
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Which color-coded microcollection container would be used to collect a complete blood count?
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lavender
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Proper technique for filling microcollection tubes include all of the following EXCEPT:
1. touching the scoop of the collection tube to the blood drop 2. tapping the tube gently to encourage blood to settle to the bottom 3. scooping up blood that runs down the finger 4. none of the above |
3. scooping up blood that runs down the finger.
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Which instance most closely resembles basal state? A patient who has:
1. been lying down for an hour 2. just arrived for a fasting blood test 3. just awakened at 0600 after fasting all night 4. worked all night but did not eat at work |
3. just awakened at 0600 after fasting all night
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You must draw a protime from a patient wit IVs in both arms. Which of the following is the best thing to do?
Draw the specimen: 1. above an IV 2. from an ankle vein 3. below an IV 4. from an IV |
3. below an IV
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Prolonged tourniquet application may cause a change in blood composition primarily because of:
1. hemoconcentration 2. hemoglobin 3. hemolysis 4. homeostasis |
1. hemoconcentration
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Which instance may lead you to suspect that you have accidentally punctured an artery?
1. a hematoma starts to form instantly 2. the blood pulses into the tube 3. the blood obtained is dark red 4. there is no way to tell |
2. the blood pulses into the tube
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If blood is drawn too quickly from a small vein, the vein will have a tendency to:
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collapse
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