Serology Flashcards

1
Q

Sensitivity measures?

A

False negatives

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2
Q

Specificity measures?

A

False positives

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3
Q

Most serologic tests require a sample of?

A

Serum or plasma

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4
Q

ELISA?

A

Enzyme linked immunosorbent assay

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5
Q

ELISA test examples:

A

Heartworm, FeLV, Parvo

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6
Q

CELISA?

A

Competitive enzyme linked immunosorbent assay

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7
Q

Positive Latex Agglutination tests look like?

A

Agglutination

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8
Q

RIM?

A

Rapid Immunomigration

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9
Q

RIM positive test looks like?

A

2 areas of color, test, & control

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10
Q

What does a Coomb’s test evaluate?

A

Autoantibodies

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11
Q

A positive immunodiffusion test looks like?

A

A band is formed

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12
Q

What indicates a positive IFA test?

A

Agglutination

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13
Q

What two times are samples collected for ab titers?

A

Acute and convolscent

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14
Q

A change in titer is called?

A

Seroconversion

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15
Q

A positive Ab otter is when there is a _____ fold _____ in titer levels.

A

4, rise

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16
Q

High titer?

A

Active infection

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17
Q

Low titer

A

Previous infection

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18
Q

Molecular diagnostic tests analyze?

A

DNA or RNA

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19
Q

3 types of molecular diagnostic tests?

A

PCR, Reverse Transcriptase PCR, Real Time PCR

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20
Q

A positive ID allergy test shows what reaction?

A

Raised welt

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21
Q

A Tb skin test is testing for which microorganism?

A

Mycobacterium sp.

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22
Q

FeLV- what is the time for infection until presence of detectable Ag?

A

28 days

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23
Q

FeLV- Ab or Ag?

24
Q

FeLV- vx cause false positive?

25
FeLV- what is the confirmation test?
IFA
26
FIV- what is the time from infection until presence of detectable Ab?
60 days
27
FIV- Ab or Ag?
Ab
28
FIV- vx cause a false positive?
Yes
29
FIV- confirmation test?
Western Blot
30
FIV- when should positive kittens be retested?
6 mo
31
FIV- why can there be false positives?
Kittens born to vx queens, MDA
32
Parvo- how long does fecal shedding occur?
7-10 days
33
Parvo- how long after exposure?
3-5 days
34
Parvo- Ab or Ag?
Ag
35
Lyme Dz- Ag or Ab test?
Ab
36
Lyme Dz- detectable levels may not be present for how long after exposure?
4-6 weeks
37
Lyme Dz- vx cause false positive?
No
38
Ehrlichia- Ag or Ab?
Ab
39
Ehrlichia- can also be Dx by?
Morale in WBC
40
Brucellosis- type of test?
Rapid Slide Agglutination Test
41
Brucellosis- Ag or Ab?
Ab
42
Heartworm dogs- Ag or Ab?
Ag
43
Heartworm dogs- first detectable?
5 mo post infection
44
Heartworm dogs- how long after tx should Ag be undetectable?
4-5 mo
45
Heartworm cats- Ab- as early as ___ mo post infection?
2
46
Heartworm cats- Ag- only picks up which gender of worms?
Female
47
Heartworm cats- best dx method?
Echocardiogram
48
Canine pregnancy relaxin- produced by?
Placenta
49
Canine pregnancy relaxin- how long following fertilization?
22-25 days
50
Canine pregnancy relaxin- levels peak around?
40-50 days
51
Canine pregnancy relaxin- false negatives?
Small litters, 1 or more dead puppies
52
Canine ovulation LH- bitch is fertile _____ days after LH surge?
4-7
53
Canine ovulation LH- how often is the test ran?
Daily
54
Canine ovulation progesterone- how often is the test ran?
Every 2-3 days
55
Foal/calf Ig- why is this s test ran?
Prevent dz related to failure of passive transfer of IgG from colostrum