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lab techniques class week 1

Terms in this set (73)

hazards associated with specific chemicals are described in the...
Material Safety Data Sheets
the bacterial agent that causes toxoplasmosis is classified as having which biohazard level
biohazard level II
regulations related to the safe shipment of potentially hazardous or infectious materials in the U.S. are mandated by the:
U.S. Department of Transportation
Do chemicals transferred into secondary containers always require secondary labeling
No
Is the use of personal protective equipment like lead lined xray gloves optional
no
the scope and extent of worker training and the documentation of that training are contained in the...
Chemical Hygeine Plan
True or false: most diagnostic samples from veterinary patients sent to outside labs for analysis fall into category B
True
Infectious canine hepatitis is classified as which biohazard level?
Biohazard level I
The government agency responsible for enforcing safety regulations in the workplace is...
OSHA
Three use of a fume hood when handling chemicals is an example of _____ that minimize workplace hazards.
Engineering controls
What is used to calibrate the refractometer
Distilled water
A pipette with a double etched or frosted band at the top us designated as...
To deliver with blowout
Which type of pipette is used only to add liquid to another liquid and must then be rinsed with the first liquid?
To contain
The optical surface of a refractometer is cleaned immediately after use with...
Lens paper
A urine sample that contains sediment is most appropriately placed in a _____ tube before centrifugation
Conical
The processing of blood components requires what type of centrifuge
Refrigerated centrifuge
The final magnification of a specimen being viewed via a 10x ocular objective and a 40x objective lens is...
400x
Which doesn't require an adapter for use with different size of test tubes? Simple standard water baths, heat blocks, circulating water baths, or waterless bead baths?
Waterless bead baths
Flat field objective lenses are also referred to as...
Planachromatic
What part of the microscope functions to aim and focus the light through the specimen
Condenser
True or false: mineral oil can be uses in place of immersion oil with the oil immersion lens
False
What part on a microscope functions to regulate the amount of light through the specimen
Iris diaphragm
The final magnification of a specimen being viewed via a 10x ocular objective lens and a 100x objective lens is...
1000x
If needed, the preferred cleaning solution to be used for the routine cleaning of microscope lenses is...
Methanol
If need, the preferred cleaning solution to be used for the removal of excess oil from the microscope lenses is...
Xylene
One kilogram is equal to how many g?
1000 g
A solution that contains 20mg/dL of a substance that is diluted 1:20 provides a final dilution of...
1mg/dL
The number that is written in scientific notation as 10² can also be written as:
100
Water freezes at how many degrees fahrenheit, and how many degrees celsius?
32°F and 0°C
In scientific notation, the number 624,012 is written as:
6.2 x 10 to the fifth power
how many mL are in a 1-L bag of 0.9% NaCl solution
1000
which term refers to how close a test result is to the actual patient value
accuracy
which term refers to the reproducibility of a test result
precision
a product that is analyzed in the same manner as a patient sample and used to verify test results is called the
control
the ability of a testing method to be accurate and precise is referred to as
reliability
collecting a blood sample from a patient that is not properly fasted is an example of a(n) ____ error
preanalytic error
an improperly maintained analyzer can introduce a(n) ____ error into a test result
analytic
hemoglobin formation begins during which stage of erythrocyte maturation
hemoglobin formation begins during the rubricyte stage
hemoglobin formation ends during which stage
hemoglobin formation ends during the metarubricyte
the primary cytokine involved in the stimulation of erythrocyte production is:
erythropoeitin
the primary cytokine involved in the stimulation of platelet production is:
thrombopoietin
the primary cytokine involved in the stimulation of leukocyte production is
leukopoietin
what is the primary site for the production of blood cells in the neonatal and juvenile animal? In the adult animal?
red bone marrow for both
what is the order of the cells in erythrocyte maturation from most immature to most mature
rubriblast, prorubricytes, rubricytes, metarubricytes, reticulocytes
what is the order of granulocyte maturation series in order from most immature to most mature
myeloblast, promyelocyte, myelocyte, metamyelocyte, band cell
the term for a decrease in the numbers of all blood cells and platelets is...
pancytopenia
when a sample is described as having a left shift, it means that there is:
an increase in the number of immature neutrophils in the blood
what color is the top on a vacutainer that is most suitable for hematology
purple or lavender
which anticoagulant is preferred for routine hematologic studies because it preserves cell morphology
EDTA
the preferred site for venipuncture in large animals is the:
jug
the preferred site for venipuncture in dogs when small volumes are needed is the:
cephalic vein
the fluid portion of blood that contains no formed elements or fibrinogen is:
serum
which anticoagulant provides the best preservation of glucose
sodium fluoride
leaving a tourniquet in place for too long can cause:
hemoconcentration
when collecting samples from a patient who requires hematology, chemistry, and coagulation testing, the first sample collected will be the one that requires which type of anticoagulation
Citrate
when collecting samples from a patient who requires hematology and chemistry testing, the first sample collected will be the one that requires which anticoagulant
no anticoagulant
the tiger top blood collection tube contains:
gel separator
the instrument that counts particles on the basis of their size is the:
impedance counter
the instrument that counts particles on the basis of their relative size and density is the
laser flow cytometer
the instrument that provides an estimate of cell counts on the basis of differential centrifugation is the:
QBC; quantative buffy coat analyzer
running the electrolyte solution through the impedance counter to identify the presence of small particles so that the analyzer does not count them is referred to as the
background count
samples from which animal may not be adequately evaluated with impedance analyzers as a result of the size similarities between RBCs and platelets
cats
the volume of each of the nine squares of the hemocytometer with the neubauer ruling is:
0.1 uL
an increase in the numbers of circulating erythrocytes is termed
polycythemia
which of the following is a possible cause of relative polycythemia? Tumors, lung dz, splenic contraction, excess EPO in the blood
splenic contraction
common causes of increase plasma protein levels include: overhydration, renal disease, liver disease, or dehydration
dehydration
plasma that appears to have a red tinge in a spun microhematocrit tube is referred to as
hemolyzed
plasma that appears to have yellow tinge in a spun microhematocrit tube is referred to as
icteric
plasma that appears milky in a spun microhematocrit tube is referred to as:
lipemic
which instrument is used to measure the total protein content of a sample is the:
refractometer
which causes a false decrease in PCV? shortened centrifuge time, icterus, low blood-to-anticoagulant ratio, or clots in the blood sample
low blood-to-anticoagulant ratio
the normal packed cell volume in dogs is about what percentage:
45%
the unit of
...
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