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qc Flashcards

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1
Q

A SYSTEN ENSURING ACCURACY AND PRECISION
USED TO MONITOR THE ANALYTIC VARIATIONS THAT CAN OCCUR WITH A NEW INSTRUMENT OR WIITH NEW LOTS CONTROL

A

QUALITY CONTROL

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2
Q

MEASURE THE SMALLEST CONCENTRATION

A

SENSITIVITY

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3
Q

ABILITY TO MEASURE ONLY THE ANALYTE OF INTEREST

A

SPECIFICITY

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4
Q

CLOSENESS OF THE ASSAYED VALUE TO THE TRUE VALUE.

A

ACCURACY

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5
Q

ABILITY TO GIVE REPEATED RESULTS ON THE SAME SAMPLE THAT AGREE WUT ONE ANOTHER

A

PRECISION/REPRODUCIBILITY

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6
Q

REFERS TO THE ABILITY OF LABORATORY TESTING TO MAINTAIN ACCURACY AND PRECISON OVER AN EXTENDED PERIOD OF TIME

A

RELIABILITY

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7
Q

ABILITY TO DETECT PROPORTION OF INDIVIDUALS WITH THAT DISEASE

A

DX SENSITIVITY

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8
Q

ABILITY TO DETECT THE PROPORTION OF INDIVIDUAL WITH THE DISEASE

A

DX SPECIFICITY

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9
Q

DETERMINES THE LOWEST AND HIGHEST VALUES THAT CAN BE ACCURATELY MEASURED BY A PARTICULAR METHOD

A

LINEARITY CHECK

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10
Q

ANALYTES CONTROL WITH PATIENT SAMPLE.
CONTROL MATERIAL IS LYOPHILIZED OR LIQUID MATERIALS THAT HAVE THE SAME MATRIX

A

INTRALAB

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11
Q

FOR LONG TERM ACCURACY

A

INTERLAB QC

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12
Q

A QUALITY PROGRAM IN WHICH SPECIMEN ARE SUBMITTED TO LABORATORY FOR ANALYSIS AND THE RESULTS OF AN INDIVIDUAL LABORATORY ARE COMPARED WITH THE RESULTS FOR THE GROUP OF PARTICIPATING LABORATORY

A

EXTERNAL QUALITY ASSESSMENT

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13
Q

SPECIMENS THAT HAVEKNOWN CONCENTRATION OF AN ANALYTE FOR THE OF INTEREST. TEH TETSIONG LABORATORY DOES NOT KNWO THE TARGETD CONCENTRATION WHEN TESTD

A

PROFICIENCY SAMPLE

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14
Q

TYPE OF ERROR: DUE TO CHANCE
ARISES FROM UNPREDICTABLE VARIATIONS OF INFLUENCE QUANTITIES
ERROR THAT DOESN’T RECUR IN REGULAR PATTERN AFFECT PRECISION

A

RANDOM ERROR

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15
Q

TYPE OF ERROR: CONSISTENT IN ONE DIRECTION OR VARIES IN PREDICTABLE WAY
RECURRING ERROR INHERINT IN TEST PROCEDURE

A

SYSTEMATIC ERROR

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16
Q

TYPE OF ERROR: HANDWRITTEN LABELS AND REQUEST FORMS

A

CLERICAL ERROR

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17
Q

TYPE OF ERROR: INDICATED BY SHIFT OR TREND IN LEVEY JENNINGS

A

SYSTEMATIC ERROR

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18
Q

THE SCIENCE OF GATHERING, ANALYZING, INTERPRETING AND PRESENTING DATA

A

STATISTICS

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19
Q

MEASURE OF CENTRAL TENDENCY, SYMMETRICAL OR NORMAL DISTRIBUTION

A

MEAN

20
Q

DIFFERENCE BETWEEN THE OBSERVED MEAN AND THE REFERENCE MEAN

A

BIAS

21
Q

TYPE OF BIAS THAT THE VALUES TENDTO BE LOWER THAN THE REFERENCE VALUE

A

NEGATIVE BIAS

22
Q

TYPE OF BIAS TEST VALUES ARE GENERALLY HIGHER

A

POSITIVE BIAS

23
Q

THE MIDDLE VALUE IN A SET OF NUMBERS THAT ARE ARRANGED ACCORDING TO THEIR MAGNITUDE

A

MEIDAN

24
Q
A
25
Q

THE HIGEHR OR FREQUENTLY OBTAINED VALUE IN A SET OF NUMBERS

A

MODE

26
Q

THE MEASUREMENT OF THE DISPERSION OF VALUES FROM THE MEAN. REFELECTS THE VARIATION OF DATA VALUES

A

STANDARD DEVIATION

27
Q

PERCENTILE EXORESSION OF THE MEAN, AN INDEX OF PRECISION

A

COEFFICIENT OF VARIATION

28
Q

MEASRE SQAURED, A MEASURE OF VARIABILITY REFLECTS DISPERSION AROUND THE MEAN.

A

STANDARD DEVIATION

29
Q

DATA ELEMETS ARE CENTERED AROUND THE MEAN, MOST COMMON SHAPED

A

GAUSSIAN CURVED

30
Q

DIFFERENCE BETWEEN QC RESULTS AND TARGETED MEAN

A

CUMULATIVE SUM GRAPH

31
Q

QC CONTROL CHART USED FOR EXTERNAL QC

A

YOUDEN/TWIN PLOT

32
Q

QC CONTROL CHART USED FOR INTERNAL QC
QC CHART IN CLINICAL LAB

A

SHEWHARD LEVEY-JENNINGS CHART

33
Q

RANGE WITHIN WHICH CONTROL VALUES MUST FALL FOR ASSY TO BE CONSIDERED VALID.

A

CONTROL LIMITS

34
Q

CONTROL VALUES THAT EITHER INCREASE OR DECREASE FOR 6 CONSECUTIVE DAYS

A

TREND

35
Q

WHAT IS THE MAIN CAUSE OF TREND

A

EXPIRING REAGENT

36
Q

CONTROL VALUES THAT DISTRIBUTE ON ONE SIDE OR SIDE OF THE MEAN FOR 6 CONSECUTIVE DAYS

A

SHIFT

37
Q

MAIN CAUSE OF SHIFT:

A

IMPROPER OR WRONG CALIBRATION

38
Q

FAR FROM THE MAIN SET OF VALUES

A

OUTLIERS

39
Q

WESTGRAD CONTROL RULES: ONE CONTROL RESULT EXCEEDS THE MEAN +/- 2SD

A

12S

40
Q

WESTGRAD CONTROL RULES: ONE CONTROL EXCEEDS THE MEAN +/-3SD

A

13S

41
Q

THE LAST 4 CONSECUTIVE CONTROL RESULTS EXCEED EITHER +/-1SD

A

41S

42
Q

ONE CONTROL EXCEEDS THE +2SD AND OTHER -2SD. 2 CONSECUTIVE CONTROLS DIFFER BY >4S CREATING A 4 STANDARD DEVIATION SPREAD

A

R4S

43
Q

10 CONSECUTIVE RESULTS ARE ONTHE SAME SIDE

A

10X

44
Q

MOST COMMONLY USED PATIENT QC TECHNIQUES

A

DELTA CHECK

45
Q

BEAR PTX TESTING, DECENTRALIZED TESTING, BEDSIDE TESTING , ALTERNATING SITE TESTING

A

POCT

46
Q

MOST COMMONLY USED POCT

A

GLUCOSE TEST

clinical chemistry (7 decks)

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