Diagnostic Lab Post Test

Which of the following is a common finding on a blood smear from an animal with

autoimmune hemolytic anemia?

Spherocytes

A kidney function test that has been found useful in birds and Dalmatians is:

uric acid

Casts that are seen in urine sediment are:

Formed in the renal tubules

Arterial blood is most commonly used to analyze:

blood gases

Determination of which of the following is useful in the detection of inflammatory

processes?

Fibrinogen

A round cell that contains a fringe border and fine nuclear chromatin is most likely a

macrophage cell.

Struvite crystals are also known as:

Triple phosphate crystals

Gram staining of a fecl specimen is performed to…

all of the above

Physical signs of hypocoagulation include all of the following except:

Thromboembolism

Jaundice can first be visibly noted at what bilirubin level?

2 mg/dL

A test that can be performed to help diagnose hyperthyroidism is:

T4

Which of the following is a non-renal cause for an increase in serum urea nitrogen?

Bleeding into the intestinal tract

What can be used to preserve parasites recovered from the digestive tract during

necropsy for later identification?

Alcohol

Which tapeworm are human beings likely to become infected with by eating poorly

cooked beef?

Taenia saginata

What are the two diagnostic forms of Giardia?

Cysts and trophozoites

Which rodent parasite is unique in that it is able to complete its life cycle within a single

individual?

Hymenolepis diminuta

Which method is a concentration technique that is useful for the detection of protozoa

and rickettsiae in white blood cells?

Buffy coat smear

A streptococcal colony with a clear zone of hemolysis on a blood agar plate is

beta-hemolytic.

Polymerase chain reaction (PCR) testing

uses DNA to identify harmful microbes.

A lymph node sample containing 90% small lymphocytes, a few plasma cells, medium

and large lymphocytes, and macrophages is characterized as

normal

Crystals in urine sediment often indicate:

nothing

A correction for nucleated red blood cells (nRBC) is done to avoid a falsely:

Elevated WBC count

Which of the following results may be found in a patient with a degenerative left shift?

Bands outnumber mature neutrophils

The presence of increased numbers of homogeneous populations of the same cell type

with no evidence of malignant characteristics within cells is described as

hyperplasia

The ability of the renal tubules to concentrate or dilute a urine sample is assessed by

what component of the urinalysis?

Specific gravity

Which method is most appropriate for visualization of protozoal trophozoites?

Direct fecal smear

Which of the following might be indicated by an elevated hematocrit?

dehydration

What characteristic is not found in toxic neutrophils?

Howell-Jolly bodies

______ is the temperature that must be reached and maintained for 13 minutes in a

steam autoclave to destroy microorganisms.

121 C

In which of the following species is rouleaux formation common?

horses

Globulin fractions can be separated by

electrophoresis

Blood levels of total bilirubin are used primarily to evaluate the function of the:

liver

Which species of tapeworm causes hydatid cyst disease?

Echinococcus granulosus

The function of hemolysins is to:

coagulate blood

Which parasite affects the reproductive tract of cattle?

Tritrichomonas foetus

Which urine cast, observed in low numbers, is a typical finding?

Hyaline

Which species of tapeworm parasitizes cattle, sheep, and goats?

Moniezia expansa

Blood samples collected immediately postprandial may be

lipemic

Which organism is the intermediate host for Taenia pisiformis?

rabbit

Sterile abscesses:

contain no bacterial or fungal organisms.

Which organism is the "liver fluke" of cattle, sheep, and other ruminants?

Fasciola hepatica

A fragmented neutrophil nucleus is described as

karyorrhexis

Which test is used to determine abnormalities in the common and extrinsic coagulation

pathways?

Prothrombin time

Noninflammatory, nonneoplastic lesions include

hematoma

Diluted urine samples that have a SG less than plasma are described as

hyposthenuric

NRBCs are typically found in peripheral blood in which species of animals?

Avian and reptile

Gram-negative bacteria retain what component of the Gram stain?

Safranin

The presence of protein in the urine may indicate:

Kidney disease

What blood chemistry test should be used to measure cholangiocyte damage?

GGT

Which of the following statements regarding liver enzyme tests is not true?

Most of these tests can be determined at room temperature.

Salmonella bacteria can infect the intestinal tract of

all of the above

What part of the plasma volume is not composed of water?

10%

What gram-negative bacteria may "swarm" a blood agar plate, leaving a film over the

entire surface?

Proteus sp.

Heavy infections with which organism can cause fatal bile duct blockage and liver

failure, especially in young rabbits?

Eimeria stiedai

Nocardia and Actinomyces spp. are gram-positive bacteria that can be presumptively

identified microscopically because

they are two of the few bacterial rods that branch.

If the veterinarian diagnoses diabetes mellitus, what two values would you expect to

find elevated?

Plasma glucose and urine glucose

Mycobacterial species are bacteria that are

are serious pathogens that require special bacterial media.

Looking under a microscope at a blood smear, you see erythrocytes that are elliptical,

not nucleated, and lacking central pallor. From which species was this sample most

probably collected?

Llama

Leukocytes in the urine sediment and a positive nitrite reaction on the urinary

colorimetric strip provide presumptive evidence that the patient might have a:

Bacterial infection

With significant dehydration in an otherwise healthy patient, which of the following would probably apear on a urinalysis and CBC?

Increased urine SG and increased PCV

Which organism is a common protozoal parasite that appears pear-shaped and

dorsoventrally flattened, with four pairs of flagella?

Giardia

During a glucose tolerance test, glucose levels in a diabetic animal will:

Remain high throughout the test

Blood levels of total bilirubin will not be a significant finding in:

Acute pancreatitis

Which parasite is characterized by eggs that are rarely recovered with standard

flotation due to their high specific gravity?

flukes

How are most humans infected with Toxoplasma gondii?

Eating undercooked meat

For how long do cats infected with Toxoplasma gondii generally shed oocysts?

2 weeks

What is the best method for recovery of mites or lice that live primarily on the skin

surface?

Cellophane tape prep

On a complete blood count (CBC), all of the following findings could be expected in a

patient with an infection except

Narrow buffy coat

Which parasite is best recovered using the sedimentation method?

flukes

What term would describe a properly prepared fecal smear?

thin

A sample characterized by the presence of more than 70% mononuclear cells with few

neutrophils is described as

granulomatous

Which test is considered most accurate in evaluating percentage of RBCs in the

circulating blood volume?

Packed cell volume

Which of the following is not a method of culturing animal viruses?

Agar plate inoculation

Which organism is the intermediate host for Dipylidium caninum?

Flea

Specimens that cannot be examined within a few hours of excretion should be

refrigerated or mixed with an equal part of which substance?

Formalin