ANSWERS LATEST UPDATE 2024 GRADE A+ (100%
CORRECT)
Which bacteria is H2S negative?
salmonella paratyphi A
Which bacteria are H2S positive?
salmonella typhi
citrobacter spp.
proteus spp.
Which statement is correct regarding clinitest?
it is used to detect glucose, galactose, and other reducing sugars
How does free to total PSA ratio show the risk of prostate cancer?
The higher the ratio, the lesser the risk
Stomatocytes are seen in what clinical condition?
liver disease
Burr cells are seen in which of the following conditions?
uremia
Reactive monocytosis is seen in which condition?
Tuberculosis
Gram negative bacteria, normally seen in the oropharyngeal tract of mammals, they are
involved in the pathogenesis of some animal bite wounds as well as periodontal diseases.
This bacteria exhibits gliding motility:
capnocytophaga
If Hgb=12 and Hct=36%, calculate MCHC
33
MCHC=Hgb/Hct x 100
Acidic urine specimens are frequently seen in.....
High protein diet
A 7 year old boy showed up in a hospital ER with dark colored urine. The dip stick shows a
large amount of blood and moderate protein. 14 days ago he had a sore throat and fever. A
throat swab is cultured and returns positive for group A beta hemolytic strep. A urine
culture will most likely be:
Negative
Anti-A 4
Anti-B 4
A-cells 2
B-cells 2
What would you do next?
Incubate reagents and specimen at RT for 15-30 minutes and repeat the test
A blue-top was drawn on a walk-in patient, PT>14s and PTT>36s
1:1 mixing study does not correct the results and there is no heparin contamination. What
test would you do next?
, dRVVT
An inhibitor is suspected. dRVVT can be used for detection of lupus anticoagulant
What does caffeine benzonate do in Hendrassik-Grof method for measuring bilirubin?
Acts as an accelerator
What factor is deficient in Hemophilia A?
Factor VIII
What factor is deficient in Hemophilia B?
IX (9)
AKA Christmas disease
How do you calculate coefficient of variation?
(standard deviation/ mean) X 100
17-Ketosteroids is produced in the
Adrenal glands
What is the formula for sensitivity?
TP / (TP + FN) x 100
What condition causes the ESR to decrease?
vibration of the desk
Poisioning with moth balls may show which of the following red cell characteristics?
Heinz bodies
Which of the following differentiates S. maltophilia from other non-fermenter gram
negative rods?
Oxidase negative; DNase positive
A 3 year old's urine shows 25 renal tubular epithelial cells under high objective, granular
casts, 3-5 WBC and nitrite is negative
Acute tubular necrosis
Which carbohydrate is often used in the media plates to differentiate S. aureus from other
Staphylococcus spp. such as S. epidermidis?
Mannitol
What urine test can help diagnose pheochromocytoma?
methanephrines
What test is used to identify Hairy cell Leukemia?
TRAP Tartrate resistant acid phosphotase
In primary biliary cirrhosis, which of the following antibodies is seen in high titers?
Antimitochondrial
Which donor candidate wont be accepted for a blood donation?
A 35 year old man who received hepatitis B immune globulin 6 months ago
Pink mucoid colonies on MAC
TSI= A/A
Indole= positive
Klebsiella oxytoca
Indole differentiates pneumo from oxytoca
Which statement is not true regarding von WIllebrand factor?
It is deficient in Hemophilia A
inside of a reference electrode is filled with what solution?
KCL