Phlebotomy Flashcards

1
Q

Laboratory Test
Requisitions / Orders

A

Patient identification (2 unique identifiers)
* Examples:
* Patient’s gender, date of birth or age
* Name of physician or legally authorized person ordering the test
* Tests requested
* Time and date of specimen collection
* Phlebotomist initials or signature*
* Source of specimen
* Other pertinent clinical information when appropriate
* A “STAT” Request
– In cases of emergency
– Document the request appropriately

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2
Q

Labels must include:

A

– Patient ID (minimum 2 identifiers)
– Date and time of collection
– Phlebotomist’s initials or signature

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3
Q

Blood Tube Draw Order

A

Blood cultures
Blue - Sodium Citrate
Red
Gold
Mint Green - Lithium Heparin
Green - Sodium Heparin
Lavander - EDTA
Gray - Sodium Floride
Dark Blue - K2EDTA

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4
Q

The patient has the right to

A

– Impartial access to treatment or accommodations regardless
of race, creed, sex, national origin, or sources of payment.
– Considerate, respectful care
– Confidentiality of all communications and other records
pertaining to patient care
– Reasonable informed participation in care
– Refuse treatment
– Request & receive and itemized bill
– Be informed of hospital rules and regulations regarding
conduct

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5
Q

Legal considerations

A

Performing venipuncture against a
patient’s will is considered assault and
battery
* Failure to identify a patient, or
misidentifying a patient can also have
legal consequences
* Misidentification of a blood bank
specimen can have lethal results
* Lawsuits have occurred in which a
phlebotomist has been charged with
harming a patient
– Nerve damage can occur if a patient
expresses extreme pain and the draw is
continued
– Always end a draw if asked to by a patient

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6
Q

Anatomy of the Arm for Venipuncture

A

2nd * Cephalic vein runs
along outside of arm

1st* Median antecubital
runs through center
of inner elbow

last* Basilic vein runs
along inside of arm

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7
Q

Pink top tube

A

– Contains EDTA
– Used for
confirmatory blood
bank testing

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8
Q

Lavender top tube

A

– Contains ethylenediamine
-tetraacetic acid (EDTA)
– Chelates/binds calcium to
prevent coagulation
– Used for hematology
(CBC, reticulocytes,
sedimentation rates,)
blood bank, immunology
(cyclosporin or tacrolimus
levels)

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9
Q

Green top tube

A

– Contains sodium
heparin or lithium
heparin
– Inactivates blood
clotting factor
thrombin
– Used for chemistry
tests
* e.g. complete
metabolic set, renal
function set, ammonia
* Must be placed on ice
for ionized calcium

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10
Q

Dark Blue top tube

A

– Contains K2EDTA or
no additive
– Used for trace
element testing and
heavy metals (zinc,
lead)

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11
Q

Light Blue Top Tube

A
  • Light blue top
    – Contains sodium citrate 3.2%-
    anticoagulent
    – Must completely fill
    – Used for coagulation tests
  • PT/INR, PTT, fibrinogen,
    Factor VIII, Russell Viper
    Venom Time (screen for
    lupus anticoagulant)
    – 1:9 ratio of anticoagulant to
    blood required
  • If short draw- coagulation
    time is prolonged
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12
Q
  • Yellow Isolator Tube
A
  • Contains lysing and
    anticoagulant
    agents
  • Used for detection
    of specific
    microorganisms
    such as yeast,
    fungae and
    mycobacteria
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13
Q

Blood Culture Bottles

A
  • Contain broth
    mixture
  • Require special
    cleaning procedure
  • Aerobic and
    anaerobic bottles
    should be drawn
  • Used to detect
    bacterial infections in
    the blood
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14
Q

Grey top tube

A

– Contains sodium
fluoride and
potassium oxalate-
weak anticoagulant
that prevents
glycolysis
– Used for glucose
tolerance tests, lactic
acid test
– Low-filling tubes,
require just 1 mL of
blood

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15
Q

Yellow Top tube

A
  • Contains either-
    SPS or Acid Citrate
    Dextrose (ACD)
  • SPS = blood culture
    specimens (sodium
    polyanethaol sulfonate)
  • ACD = Used for
    tissue typing and
    DNA testing
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16
Q

Factors That Affect Quality of
Tubes

A
  • Temperature
    – Low temp = pressure↓ = increase in draw volume
    – High temp = decrease in draw volume
  • Altitude
    – High altitude = lower volume draw
  • Humidity
    – Plastic tubes only – high humidity bad for
    lyophilized additive. Low humidity bad for wet
    additives
  • Light – CTAD (citric acid, theophylline, adenosine,
    and dipyridamole)
  • Expiration date
    – Stability of additive
    – Vacuum retention
    – Most = 12 month
17
Q

Special Requirements

A
  • Timed tests:
    – Drug Levels
  • e.g. Cyclosporin, Tacrolimus, Vancomycin,
    Heparin
  • May be drawn as peak, trough or at another
    specified time
18
Q

Factors for Sample
Rejection

A
  • Test request does
    not match labels
  • Label is unreadable,
    partially destroyed,
    missing
  • Anticoagulated tube
    has clotted
  • Excessive delays
  • Hemolysis
  • Improper transport
    or storage temp
  • Improper blood volume
    in additive tube
  • Lipemic blood
  • Non-fasting
  • Outdated/expired
    supplies
  • Effects of posture on
    analyte
  • Timed specimens drawn
    at the wrong time
  • Contaminated
19
Q

Labs that must be sent on
ice:

A

– Ammonia (drawn in lithium heparin green
top tube)
– Lactic acid (drawn in grey top without use
of tourniquet)
– Glucagon levels