Microbiology MCQs Mock Test – Chapter 43

Urobilinogen is formed in the?

An arterial blood specimen submitted for blood gas analysis was obtained at 8:30 am but was not received in the laboratory until 11:00 am. The technologist should?

Erythrocytes that vary in size from the normal 6-8 um are described as exhibiting:

Enzyme-multiplied immunoassay techniques (EMIT) differ from all other types of enzyme immunoassays in that?

Which of the following is considered a normal hemoglobin?

What is the normal WBC differential lymphocyte percentage (range) in the adult population?

Lithium therapy is widely used in the treatment of?

Using a Coulter counter analyzer, an increased RDW should correlate with:

Which condition will shift the oxyhemoglobin dissociation curve to the right?

The measurement of the amount of electricity passing between two electrodes in an electro-chemical cell is the principle of:

Given the following values, which set of red blood cell indicies suggests spherocytosis?

TSH is produced by the?

Clinical assays for tumor markers are most important for?

If a patient has a retic count of 7% and a Hct of 20% what is the corrected retic count?

Estrogen and progesterone receptor assays are useful in assessing prognosis in which of the following?

Insufficient centrifugation will result in:

A manual white blood cell count was performed. A total of 36 cells were counted in all 9-mm^2 squares of a Neubauer-ruled hemacytometer. A 1:10 dilution was used. White is the WBC?

All of the following factors may influence the ESR except:

A carbonate salt used to control manic-depressive disorders is?

Which is the major type of leukocyte seen in the peripheral smear of a patient with aplastic anemia?

A falsely elevated Hct is obtained. Which of the following calculated values will not be affected?

Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are both elevated in which of the following diseases?

The anticonvulsant used to control tonic-clonic (grand mal) seizures is?

A 7.0 mL etheylenediaminetetraacetic acid (EDTA) tube is received in teh lab containing only 2.0 mL of blood. If the lab is using manual techniques, which of the following tests will most likely be erroneous?

Which of the following is the preferable site for bone marrow aspiration and biopsy in an adult?

Which of the following lipid results would be expected to be falsely elevated on a serum specimen from a nonfasting patient?

A potassium level of 6.8 mEq/L is obtained. Before reporting the results, the first step the technologist should take is to?

A correction is necessary for WBC counts when nucleated RBC are seen on the peripheral smear because:

Cerebrospinal fluid for glucose assay should be?

Mean cell volume (MCV) is calculated using the following:

A decreased osmotic fragility test would be associated with which of the following conditions?

What effect would using a buffer at pH 6.0 have on a Wright’s-stained smear?

A 1:200 dilution of a patient sample was made and 336 red cells were counted in an area of 0.2 mm^2. What is the RBC count?

What term describes the change in shape of erythrocytes seen on a Wright’s-stained peripheral blood smear:

Specimens for blood gas determination should be drawn into a syringe containing?

An analgesic that alleviates pain without causing loss of consciousness is?

What staining method is used most frequently to stain and count reticulocytes?

The following results were obtained in a creatinine clearance evaluation: Urine concentration:                                   84 mg/dL Urine volume:                                   1440 mL/24hr Serum concentration:                     1.4 mg/dL Body surface area:                          1.60 m2 (average = 1.73m2) The creatinine clearance in mL/min is:

A Miller disk is an ocular device used to facilitate counting of:

The Coulter principle for counting cells is based upon the fact that:

What phagocytic cells produce lysozymes that are bacteriocidal?

Calculate the mean cell hemoglobin concentration (MCHC) using the following values: Hgb: 15 g/dL RBC: 4.50 x 10^6/uL Hct: 47 mL/dL

When an erythrocyte containing iron granules is stained with Prussian blue, the cell is called a:

Which of the following erythrocyte inclusions can be visualized with supravital stain but cannot be detected on a Wright’s stained blood smear?

The TRH stimulation test is useful in assessing which of the following?

Which of the following statistical terms reflects the best index of precision?

Coulometry is used to measure?

Turbidity in serum suggests elevation of?

The measurement of light scattered by particles in the sample is the principle of?

RBC indices obtained on a patient are as follows: MCV: 88 um^3 MCH: 30 pg MCHC: 34% The RBC on the peripheral smear would appear: