16 Questions
Which of the following is the rarest type of granulocyte?
Basophils
Some abnormal MCHC values are due to artifacts caused by which of the following conditions?
Technical Errors
Which type of blood collection tube should be used for PT and PTT assays?
Blue-topped (3.2% sodium-citrate) tube
Sites of biopsied for superficial locations include the following, EXCEPT:
Internal
To diagnose DIC, all of the following laboratory abnormalities must be present, EXCEPT:
Increased Platelet count
In vaginal cytology, what type of cell is predominant during Estrus?
Intermediate cells
Which of the following enzymes indicates cholesterol disease?
ALP - alkaline phosphate
What is the most common clinical sign associated with thrombocytopenia?
Subcutaneous ecchymoses - Bruise
In vaginal cytology, what type of cell is predominant during Estrus?
Intermediate cells
As erythrocytes mature, the cells become:
Loss of Nucleus and Organelles
When using the eosin/nigrosin stain, an alive spermatozoa will appear:
Blue
TRUE or FALSE. Coagulation abnormalities can lead to extensive hemorrhaging.
True
It occurs when dense aggregates of residual RNA remain in immature RBC's.
Basophilic stippling
Ingestion of which of the following pesticides could prolong a patient's PT and PTT?
Vitamin K antagonists
Which of the following facts about anticoagulants is TRUE?
Vitamin K antagonists inhibit the synthesis of clotting factors
Refractive index is:
The ratio of the speed of light in a medium to the speed in a vacuum
Study Notes
Blood and Hematology
- Basophil is the rarest type of granulocyte.
- Abnormal MCHC values can be due to artifacts caused by lipemia, icterus, or paraproteinemia.
- PT and PTT assays require a sodium citrate blood collection tube.
Biopsy and Laboratory Tests
- Biopsies for superficial locations do not include the liver.
- DIC diagnosis does not require a single specific laboratory abnormality, as all of the following must be present, except one.
Vaginal Cytology
- During Estrus, superficial cells are predominant in vaginal cytology.
Enzymes and Diseases
- Cholesterol disease is indicated by the enzyme lipase.
Clinical Signs and Symptoms
- The most common clinical sign associated with thrombocytopenia is petechiae or bleeding.
Cell Development and Maturation
- As erythrocytes mature, they become smaller and more spherical.
- In immature RBC's, dense aggregates of residual RNA remaining are known as Howell-Jolly bodies.
Staining and Spermatozoa
- When using the eosin/nigrosin stain, a live spermatozoa will appear unstained.
Coagulation Abnormalities
- TRUE: Coagulation abnormalities can lead to extensive hemorrhaging.
Pesticides and Anticoagulants
- Ingestion of the pesticide brodifacoum can prolong a patient's PT and PTT.
- TRUE: Anticoagulants are used to prevent blood clotting in vitro.
Physics and Refractive Index
- Refractive index is a measure of how much a substance bends light.
Test your knowledge of hematology with these multiple-choice questions covering topics such as rare granulocyte types, abnormal MCHC values, and blood collection tubes for PT and PTT assays.
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