METHODS OF BLOOD COLLECTION Flashcards

1
Q

What method of blood collection?
(a) A method of blood collection by skin puncture. Method of choice in pediatric patients. It is useful in adults with extreme obesity, severe burns
and thrombotic tendencies.*
(b) Blood collected from the heel, finger, earlobe or toe.
(c) In older infants and elderly population, the palmer (fleshy) surface of the distal phalanx of the middle or ring finger, with the middle finger being the first choice.

A

Capillary Puncture

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2
Q

What method of blood collection?
(a) A blood collection procedure via the patient’s vein.
(b) Best method of blood collection.
(c) The relative ease of obtaining venous blood makes this a primary source of specimen for clinical laboratory analyses.

A

Venipuncture Method

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3
Q

Method of choice in pediatric patients

A

Capillary Puncture

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4
Q

Can you draw blood from IV sites?

A

No

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5
Q

Why cant you draw blood from IV sites?

A

It dilutes the specimen.
Alters test results.

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6
Q

A liquid anticoagulant used in purple tops.
_______ is a chelating agent that binds calcium so blood cannot clot.

A

EDTA
(Ethylenediaminetetracetic Acid)

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7
Q

CBC/ Differential WBC can be refrigerated for how long?

A

24 hours

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8
Q

A powder anticoagulant used in light blue tops

A

Sodium Citrate

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9
Q

Sodium Citrate
Typically used for what coagulation studies:

A

a) Prothrombin Time (PT).
b) Partial Thromboplastin Time (PTT).

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10
Q

What anticoagulant
A liquid or powder anticoagulant in green tops.
Typically used for plasma studies and Chemistry testing

A

Heparin

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11
Q

What color tube has no anticoagulant or no additives.
Used mainly for:
(1 Chemistry
(2 Serology
(3 Blood bank
(4 Other tests requiring serum.

A

Red top tube

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12
Q

What tube?
a) No anticoagulant.
b) Contains a serum separator gel.
c) Primarily used for chemistry testing.

A

Serum separator tube (SST)/Gold Top, Tiger top, HIV tube (red/yellow).

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13
Q

What tube top?
a) Contains sodium fluoride
b) Used for glucose studies.
c) ETOH level analysis.
d) Inhibits Glycolysis.

A

Grey top tube

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14
Q

What is the draw order?

A

blood culture tubes,
blue top,
red top,
SST,
green top,
lavender top,
gray top.

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15
Q

What do you do for a pt with syncope from blood draw?

A

Have patient lie down.
Treat symptomatically

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16
Q

True/False
You can draw blood while the patient is standing up

A

FALSE
Never draw blood while patient is standing up

17
Q

Green top tubes are used for what studies?

A

Chemistry
Ammonia
Adrenocorticotropic hormone (ACTH)

18
Q

Not mixing the tube results in what?

A

Blood clots

19
Q

What blood draw error
-Could render the specimen unacceptable due to quantity not sufficient to perform the test.
-Results in improper anticoagulant/blood ratio.

A

Short fill