chapter 16 questions Flashcards
cold agglutinins and cryofibrinogen samples should be
warmed before collection and transported warmed
infant bilrubins are transported
in ambered-colored microtubes
once a cap is removed from a blood tube the PH
may increase
can be centrifuged immediately after collection
sodium citrate tubes
CANT
-serum separator tubes
-clot tubes
-thrombin tubes
specimen would not be rejected
a cold agglutinin sample transported in a heel warmer packet
complete blood clottitng may take _____
at room temperature
30 to 40 mins
major risk of stopper removal is
aerosol
identify a pt. specimen in the laboratory
accession number
general guidelines for specimen transportation
- invert tubes with additives immediately after draw (mixing tubes changes concertation of thr blood/ratio can cause erroneous results
-specimens must be correctly labeled
-efficient and safe way to transport
(in a leak-resistant bag)
-specimens transported outside of hospital
-remain upright during transport
time constraints
quality of the test results depend on time between the time of draw and when analyzed
-longer intervals more likely inaccurate results
-can lead to glycolysis(metabolic sugar breakdown within cells)
(clsl) no more than 2 hours
should pass between collection and separation by centrifugation of cells from plasma or serum
analytes
subtances being tested
separating cells from plasma prevents
alteration of the levels of analytes in the serum and plasma as the cells continue to metabolize
once separated can be held longer
temperature consideration
extreme temperatures can cause hemolysis
keeping specimens warm
37c w heel warmer packet b4 collection sent to lab with 30mins
