10-13 Review Flashcards
Which of the following tests requires an arterialized specimen?
blood gases
Capillary puncture supplies include
gauze pad
lancet
microcollection device
capillary puncture blood contains
arterial blood
interstitial fluids
venous bloods
the concentration of which substance is higher in capillary blood than in venous blood?
glucose
Capillary puncture is typically performed on adults when
no accessible veins are located
the patient has thrombotic tendencies
veins are saved for chemotherapy
If collected by capillary puncture, which of the following is collected first
cbc (edta)
Which of the following conditions disqualifies as a site for capillary puncture
cyanotic
edematous
swollen
which of the following is the least hazardous area of an infant’s foot for capillary puncture
lateral plantar heel surface
according to CLSI, a heel puncture lancet should be no deeper than
2.0 mm
which of the following is a proper capillary puncture procedure?
wipe away first drop of blood
When making a routine blood smear, the “pusher slide” is normally used at an angle of how many degrees?
30
the blood specimen for which test is placed in circles on special filter paper?
PKU
which of the following fingers is the best for a capillary puncture
middle
which test cannot be collected by capillary puncture and taken to the laboratory for processing and testing?
PTT
capillary action is a term used to describe how
blood fills a microhematocrit tube
fluid in the spaces between cells is called
interstitial fluid
correct newborn screening test collection or handling includes
using one large drop to entirely fill a collection circle
strong repetitive pressure, such as squeezing or milking a site during capillary collection
can hemolyze and contaminate specimens
neonatal screening is the testing of
newborns for certain disorders
in an infant’s heel, the primary blood supply is located
between 0.35 and 1.6 mm deep
when drawing a blood alcohol specimen, it is acceptable to clean the arm with
benzalkonium chloride
which of the following is the most critical part of blood culture collection
antisepsis of the collection site
TDM peak concentration may be defined as the
highest concentration of the drug during a dosing interval
In performing a glucose tolerance test, the fasting specimen is drawn at 0815 and the patient finishes the glucose beverage at 0820. When should the one-hour specimen be collected
0920
what color is the stopper of a CTAD tube, for what type of test is it used, and why?
light blue; coagulation; inhibit platelet activation
Removing a unit of blood from a patient and not replacing it is used as a treatment for
polycythemia
What tests may require special chain-of-custody documentation when the specimen is collected?
drug screen
Individuals who wish to donate blood in most states must be at least
17 y/o and weigh at least 110
Which of the following tests must have a 9:1 ratio of blood to anticoagulant in the collection tube?
protime
Which of the following tests is collected in a trace element-free tube?
aluminum
Common chemistry tests performed by POCT instruments include
Na and K
Which of the following is a test that measures packed cell volume?
Hct
Which tests require four special tubes collected using a special order of draw?
TB-gold
Hemochromatosis
can be treated by removing blood
causes iron deposits in the tissues
is sometimes an inherited disorder
Which is a nonspecific marker of systemic inflammation
CRP
A patient undergoing a GTT vomits one hour and five minutes after drinking the beverage. What action should the phlebo take?
discontinue the test, and write on the requisition that the patient vomitted
When does a blood glucose level in normal individuals typically peak after glucose ingestion?
in 1/2 hr to 1 hr
The definition of toxicology is
the scientific study of poison
Septicemia is
the presence of microbes in the blood
Rapid syphilis tests detect
treponema pallidum
Computer networking causes Congress to take steps to eliminate patient confidentiality violations by
enacting the HIPPA law
Logging on to most computer systems require the use of a(n)
password
After arriving in the laboratory, all specimens are immediately:
logged in or accessioned
Which of the following would be omitted from a lab-generated computer label?
patient diagnosis
Barcoding in which area of health care is currently unlikely?
CLIA documentation
Which of the following specimens should be protected from light?
bilirubin
A splash of serum is released when the stopper of a centrifuged serum separator tube is removed. What is the most likely reason?
the tube was tilted after it was centrifuged
After obtaining a specimen for a cold agglutinin test, the blood must be transported
at body temp
All of the following are required PPE when processing specimens EXCEPT
fluid-resistant shoe covers
Which of the following blood specimens requires cooling during transportation
homocysteine
A serum aliquot has a fibrin clot in it. The most likely cause is the specimen was
centrifuged before clotting was complete
Which of the following specimens would be acceptable for testing
cbc in lavender top
As a general rule, serum or plasma should be removed from the cells within
120 minutes
Which of the following specimens can be centrifuged immediately
electrolytes in a PST
The difference between barcodes and radio frequency identification is RFID:
can work up to 100 ft away
Most POC analyzers are interface-capable, but the decision to do so is based on:
the impact the test has on a patient
all blood specimens transported by a courier must be:
protected from direct sun exposure
Which federal agencies regulate the transporting of biological specimens offsite?
DOT and IATA
Which of the following test specimens can be analyzed without being centrifuged?
Hemoglobin A1c in an EDTA tube
A panic value is a
significantly abnormal test result
Additional information typically required on a nonblood specimen label includes the
specimen type
Which type of urine specimen is the best for detecting a UTI
clean-catch
which of the following statements describes proper 24-hour urine collection
discard the first-morning specimen, start the timing, and collect all urine for the next 24 hours including the first specimen voided the following morning
which nonblood specimen is most frequently analyzed in the lab?
urine
Which of the following fluids is associated with the lungs?
pleural
A procedure called iontophoresis is used in the collection of what specimen?
sweat
Saliva specimens can be used to detect
alcohol
drugs
hormones
Which test typically requires a refrigerated stool specimen?
fecal fat
A breath test can be used to detect organisms that cause
peptic ulcers
Which of the following is a type of serous fluid
pleural fluid
A quick, noninvasive means of paternity testing is performed on cells from a
buccal swab
which type of sample is commonly used to identify arsenic poisoning in agricultural workers?
hair
A positive FIT test indicates
bleeding in the colon or rectum
A first morning specimen is unacceptable for urine cytology because
cells may have disintegrated in the bladder overnight
Alcohol testing of urine is problematic because
fermentation by bacteria can cause false positives
What type of specimen is needed for a guaiac test
feces
A throat swab is most often collected to test for
group A strep
Pregnancy can be confirmed by testing urine for the presence of
hCG
A refractometer can be used to measure urine
specific gravity
Which rapid diagnostic tests are now commonly used to detect foodborne illnesses
CIDTs
