MXT 2 EXAM 2 Flashcards
a 24- hour urine specimen may be collected to
determine the cause of kidney stone formation
a patient who is fasting( in preparation for a laboratory test) can consume
water
a pH reading of 8 means that the urine specimen is
alkaline
a small sample taken from the body to represent the nature of the whole is known as a
specimen
a urinalysis may be performed for all of the following except to
treat a patient’s condition
all of the following are advantages of the laboratory component of EHR program except
a type of tests required by the patient can be determined by the program
all of the following are characteristics of a CUA waived tests except
they require the use of highly sophisticated automated equipment
all of the following are examples of CLIA- waived test except
microscopic analysis of urine sediment
all of the following are found in the laboratory directory except
instruction for testing specimens in the POL
all of the following are guidelines for strong specimens and testing components in a labortory refrigerator except
check the temperature of the refrigerator once each week
all of the following are guidlines for the collection of a test-catch urine specimen except
the patient should cleanse the general are before collection of the specimen
all of the following are included in a lipid profile except
glucose
all of the following are included on a laboratory request form except
laboratory test results
all of the following are reasons for including the clinical diagnosis on the labortory request form except
to inform laboratory personnel of the source of the specimen
all of the following may beed to be flushed out the eye using an emergency eye wash station except
eye discharge
antibiotics taken by the patient before the collection of a throat specimen for culture may result in
a false negative report
blood may normally be present in the urine because of
mensrtuation
how are laboratory reports delivered to the medical office
all are correct
how much urine does the normal adult excrete each day?
750 to 2000 mL
how should urine reagent strips be stored?
all are correct
if a freshly voided specimen is cloudy, it means that
a urinary tract infection may be present
if a laboratory report is returned to the medical office marked QNS, it means that
an insufficient amount of specimen was submitted
if a POL is performing moderate-complexity test, CLIA requires
all are correct
if the internal control of the urine pregnancy test does not perform as expected, the test results are interpreted as
invalid
most of the urine is composed of what substance
water
polyuria may be caused by
all are correct
the pH of most urine specimens is
acidic
the presence of bile pigments in a urine specimen causes the specimen to be
yellow-brown
the purpose of quality control is to
ensure accurate and valid test results
the purpose of the clinical laboratory improvement amendment(CLIA) is to:
improve the quality of laboratory testing in the United States
what effect does concentrated urine have on red blood cells?
it causes them to shrink and become crenated
All of the following are characteristics of a CLIA waived test except
they require the use of highly sophisticated automated equipment
what is a profile
a combination of laboratory tests for identifying a disease
what is included in a complete urinalysis?
all are correct
what is the name for a control that is built into the test system?
internal control
what is the name of the hormone present only in the urine and blood of a pregnant women?
human chorionic gonadotropin
what is the normal range for a specific gravity of urine?
1.003 to 1.030
what is the purpose of a laborotory report?
to relay the results of laboratory tests to the provider
what is the purpose of patient preparation for a laboratory test?
to provide a specimen that yields accurate test results
what is the purpose of performing a routine test?
to assist in the early detection of disease
what is the purpose of the patient accession number found on the laboratory report?
to provide identification of each specimen in the laboratory
what is the term for a substance that is being identified or measured in a laboratory test?
analyte
what is the term for a test result that includes whether a substance is present in the specimen being tested and provides an approximate indication of the amount of the substance present?
qualitative test result
what is the term for the presence ketone bodies in the urine?
ketosis
what occurs if a urine specimen is allowed to stand for more than 1 hour at room temperature?
it becomes cloudy
what should be done if a control does not perform as expected?
do not perform patient testing until the problem is resolved
what temperature is usually required for storing testing materials and performing laboratory tests?
room temp
what type of results are produced by a high-level control?
results that fall above the reference range for the test
what type of specimen should be used to test for the presence of nitrate in the urine?
first voided morning specimen
when collecting a clean-catch midstream urine specimen, a front-to-back motion is used to cleanse the urinary meatus to
avoid drawing microorganisms from the anal region into the area being cleansed
when collecting a clean-catch midsteam urine specimen, a small amount of urine is voided into the toilet obtaining the specimen to
flush microorganisms out of the distal urethra
when performing a microscopic examination of urine, the presence of how many white blood cells/HPF is considered normal?
0 to 8
where are urinary casts formed?
in the lumen of the nephron tubules
which of the following assists the provider in making a diagnosis?
all are correct
which of the following doers not result in oliguria?
edema
which of the following is a violation of laboratory safety precautions?
opening the centrifuge before it comes to a complete stop
which of the following is an example of a quantitative test result?
500mg/dL
which of the following is an example of a unique identifier?
patients name and date of birth
which of the following is an example of using a laboratory test to assist in the differential diagnosis of a patients condition?
performing a strep test to determine if a patient has strep throat or pharyngitis
which of the following is an example of using a laboratory test to regulate treatment?
a diabetic patient tests his or her blood before administering insulin
which of the following is included in a product inserting of a testing kit?
all are correct
which of the following is usually found in the urine sediment of a patient with candidiasis?
yeast
which of the following laboratory tests requires fasting?
all are correct
which of the following may cause a control to fail to produce expected results?
all are correct
which of the following normally contains microorganisms?
urinary meatus
which of the following occurs when the body is in homeostasis?
laboratory tests results fall within the reference range
which of the following represents an error in technique when performing a urine pregnancy test?
the specific gravity of the soecimen is 1.003
which of the following represents an error in technique when testing a urine specimen with a reagent strip?
touching the reagent areas with the fingers
which of the following substances is normally present in urine?
urea
which of the following test results indicates a concentrated urine specimen?
specific gravity 1.025
which of the following tests is performed on a first- catch urine specimen?
NAA test for chlamydia and gonorrhea
which of the following tests require a clean-catch midstream specimen?
urine culture
which of the following urine specimens contains the greatest concentration of dissolved substances?
first-voided morning specimen
which of the following urine test may be positive when a patient has undiagnosed diabetes mellitus
glucose
which of the following urine tests may be positive when a patient has hepititus
bilirubin
