Lab Tests

Question 1

Carcinogenicity, mutagenicity. Uses Salmonella typhimurium.

Answer 1

Ames test

Question 2

Anthrax

Answer 2

Ascholi test

Question 3

Tests Strep pyogenes Antibodies. Rheumatic fever.

Answer 3

ASO titer

Antistreptolysin O Titre

Question 4

% of butter fat in milk

Answer 4

Babcock test

Question 5

Pneumococci vs. Alpha Hemolytic Strep viridans

Answer 5

Bile solubility

Question 6

best test for water solution

Answer 6

BOD

“Biological Oxygen Demand”

Question 7

aka Complement Fixation

Answer 7

Bordet Gengou Phenomenon

Question 8

Staph vs. Strep

Answer 8

Catalase

Staph (cat +) vs. Strep (cat -)

Question 9

Virus culture (viruses obligate intracellular parasites. Cannot grow on agar)

Answer 9

Chick embryo culture

Question 10

(aka Thayer Martin Agar aka Heated Blood Agar) for Gonorrhea

Answer 10

Chocolate Agar

Question 11

Staph aureus vs. other Staph. pathogenic vs. non - pathogenic

Answer 11

Coagulase
Staph aureus (Coag +) vs. other Staph (Coag -

Question 12

checks E. coli in water purification. Fecal contamination in water

Answer 12

Colliform

Question 13

Hymolysis, cell lysis.

Answer 13

Complement fixation

Question 14

Tests RBC antigens. Hemolytic anemia. Erythroblastosis fetalis, Rh Factor

Answer 14

Coombs

Question 15

scarlet fever

Answer 15

Dicks test

Question 16

for protozoa / parosites

Answer 16

Giemsa Stain

Question 17

Seronegative arthritides (PEAR = Psoriatic, enteropathic arthropathy(AS with
ulcerative colitis or Crohns), AS, Reiter's)

Answer 17

HLA B27

Question 18

AIDS (ELISA test checks DNA, Western blot checks protein).

If 2 ELISA(+), do Western blot. If Western Blot(+)= AIDS.

Answer 18

HLA DR5/CD4

Question 19

for Staph

Answer 19

Mannitol Salt

Question 20

stiff neck. Possible meningitis. CSF studies show lower glucose

Answer 20

Nuchal rigidity

Question 21

Heterophile Agglutination test for Mononucleosis (see below)

Answer 21

Paul Bunnel

Question 22

Milk pasteurization adequate? If all phosphatase enzyme destroyed.

Answer 22

Phosphatase

Question 23

Swelling of capsule of Strep pneumoniae

Answer 23

Quellung reaction

Question 24

tests for fungi

Answer 24

Sabouraud Agar

Question 25

immunity to diphtheria

Answer 25

schick test

Question 26

antitoxin reaction to scarlet fever

Answer 26

schultz - carlton rxn

Question 27

virus culture (viruses obligate intracellular parasites. cannot grow on agar)

Answer 27

tissue culture

Question 28

serology test. positive for all Rickettsia except Coxiella burnetii (Q fever)
antigen for test = proteus vulgaris

Answer 28

weil felix

Question 29

typhoid fever test

Answer 29

widal

Question 30

look for altered epitheliod cells Herpes Zoster and Simplex, also Varicella

Answer 30

Tzank test