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Clin Chem Lec > Module 3- Specimen Collection > Flashcards

Module 3- Specimen Collection Flashcards

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1
Q

Errors made during the testing process

A

Analytical errors

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2
Q

Errors made in interpretation of analytical results

A

Post-analytical errors

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3
Q

Most important step in specimen collection

A

PROPER PATIENT IDENTIFICATION

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4
Q

type of blood specimen used in chemistry

A

Serum

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5
Q

Type of blood specimen used in hematology and can be used in absence of serum

A

Plasma

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6
Q

Type of blood specimen used for hematology and chemistry

A

Whole blood

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7
Q

Anticoagulant present in plasma

A

Fibrinogen

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8
Q

Medtechs are not allowed to perform this procedure

A

Arterial puncture

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9
Q

A procedure frequently done on pediatrics or geriatric

A

Skin puncture

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10
Q

Most common blood collection method done by medtechs

A

Venipuncture

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11
Q

Most common AP site for adults

A

Radial artery (45 degrees)

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12
Q

2nd alternative AP site for adults

A

Brachial artery (45 degrees)

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13
Q

Least AP site for adults

A

Femoral artery (90 degrees)

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14
Q

Most common AP site for newborns

A

Umbilical artery

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15
Q

Test for collateral circulation of radial artery

A

Allen’s test

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16
Q

Preferred skin puncture site in babies or children

A

Lateral plantar heel surface

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17
Q

Preferred skin puncture site for adults

A

Palmar surface of fingers (3rd and 4th)

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18
Q

Another preferred skin puncture site

A

Earlobes

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19
Q

Preferred site for venipuncture

A

Antecubital fossa region

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20
Q

Preferred vein for venipuncture

A

Median cubital

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21
Q

2nd preferred vein

A

Cephalic

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22
Q

Least preferred vein

A

Basilic

23
Q

Needle used for infants

A

Butterfly needle

24
Q

Anticoagulant for glucose testing

A

Sodium fluoride

25
Q

Meaning of EDTA

A

Ethylene-diamine-tetraacetic acid

26
Q

Anticoagulant for coagulation studies

A

Citrate

27
Q

Anticoagulant for ph or blood gas analysis

A

Heparin

28
Q

Two most common reason for hemoglobin pigments

A
  1. Traumatic tap
  2. Subarachnoid haemorrhage
29
Q

Collection method for cerebrospinal fluid

A

Lumbar puncture

30
Q

Collected anytime during the day

A

Random sample

31
Q

Preferred for pregnancy testing

A

First voided specimen

32
Q

Used when physician requires urine samples to be taken at specific intervals during the day

A

Timed specimen

33
Q

For creatinine clearance test and many other hormone studies

A

24-hour urine specimen

34
Q

Used for culture and bacterial growth; routine screening

A

Clean-catch midstream specimen

35
Q

Obtained by inserting a sterile flexible tube into the bladder via the urethra to withdraw urine

A

Catheterized specimen

36
Q

How many mL of pleural fluid is needed for a complete analysis

A

20-40 mL

37
Q

Pleural fluid should be transported to the laboratory at what temperature?

A

Ambient temperature

38
Q

Maximum acceptable time delay before the processing of pleural fluid is?

A

2 hours

39
Q

Pleural fluid should be stored in the refrigerator if longer delay is expected at what temp?

A

4 deg. celsius

40
Q

Pleural fluid is collected from the?

A

Lung cavity

41
Q

Pericardial fluid is collected via

A

Pericardiocentesis or open surgical drainage

42
Q

Green peritoneal fluid indicates?

A

Bile, pancreatitis, cholecystitis

43
Q

Cloudy/turbid peritoneal fluid indicates?

A

Infection

44
Q

Viscous fluid in the cavities of movable joints

A

Synovial fluid

45
Q

Synovial fluid is collected via

A

Arthrocentesis

46
Q

Fluid present in the amniotic sac surrounding the fetus

A

Amniotic fluid

47
Q

Collection procedure for amniotic fluid

A

Amniocentesis

48
Q

Yellow amniotic fluid indicates

A

Hemolytic disease of the newborn

49
Q

Dark green amniotic fluid indicates

A

Meconium

50
Q

Dark red brown amniotic fluid indicates

A

Fetal death

51
Q

Inert substances contained in or near the bottom of certain tubes

A

Thixothropic gel separators

52
Q

Most common antiglycolytic agent

A

Sodium fluoride

53
Q

Sodium fluoride is often combined with

A

Potassium oxalate

54
Q

_______ May be used for transport of cerebrospinal fluid to the laboratory

A

Pneumatic tube system

Clin Chem Lec (5 decks)

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