MDLB 1321 Module G - Computers
& Specimen Handling Questions
and Answers 100% Correct
Accession number - ANSWER - unique number generated when test request is
entered into computer
CPU - ANSWER - Central Processing Unit
RAM - ANSWER - Random Access Memory; temporary memory
ROM - ANSWER - Read Only Memory- Permanent instructions that cannot be
changed
all additives except ______________ require 5 to 10 inversions. - ANSWER - sodium
citrate
possible sources of preanalytical error before collection - ANSWER - altitude,
dehydrated patient, duplicate test orders, inadequate fast, medications, stress,
pregnancy, smoking, wrong test ordered etc
possible sources of preanalytical error at the time of collection - ANSWER -
misidentified patient, antiseptic not dry, expired tube, incorrect collection tube,
incorrect needle position, mixing tubes too vigorously, non sterile site prep,
prolonged tourniquet application, wrong collection time etc.
possible sources of error during specimen transfer - ANSWER - agitation-induced
hemolysis, delay in transport, exposure to light, failure to follow temp. requirements
possible sources of preanalytical error during specimen processing - ANSWER -
contamination, delay in processing or testing, delay in fluid separation from cells,
evaporation, failure to centrifuge specimen according to test requirements,
mislabeled aliquot
, transportation of dangerous goods act (TDG) - ANSWER - federal legislation that is
in place to ensure the safety of all individuals handling the specimen as well as to
ensure the public's safety in the event of an accidental spill or leak. The act pertains
to the transport of all goods that are considered dangerous.
categories of TDG - ANSWER - Class 1: Explosives
Class 2: Gases (Dry Ice)
Class 3: Flammable and combustible liquids
Class 4: Flammable solids
Class 5: Oxidizing substances
Class 6: Poisonous (toxic) and infectious substances (all lab specimens)
Division 1: Poisonous Substances
Division 2: Infectious Substances
Category A: Infectious Substance, Affecting Humans
Category B : Biological Substance, Including Waste
Class 7: Radioactive materials
Class 8: Corrosives
Class 9: Miscellaneous products (Formalin
test negatively affected by PTS transport - ANSWER - postassium, plasma
hemoglobin, acid phosphatase, and lactate dehydrogenase. also specimens with
body temp requirements
Ammonia specimens should be... - ANSWER - ...placed on ice and transported to the
lab immediately.
glucose specimens in sodium fluoride tubes - ANSWER - stable for 24 hours at room
temperature and up to 48 hours when refrigerated
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