Chapter 12 Flashcards
The most reliable labeling methods for avoiding transcription errors in specimen collection is
Bar coded computerized labels
The TAT refers to
The time is takes for laboratory test results to be completed
A possible occurrence if a blood specimen tube for hematology tests is filled correctly but not mixed long enough
Tiny clots will form in the specimen
A possible occurrence if a blood specimen tube for hematology tests is filled correctly but mixed too long or too vigorously
Hemolysis will occur
Factors that should be considered when pneumatic tube systems are used for transporting specimens
All of the above
Glycolytic action refers to
Breakdown of glucose
Serum should be transported to the laboratory for testing and separated from blood cells within this time period to prevent erroneous test results
As soon as possible
Cooling a blood specimen causes
Slowing of metabolic processes
How should the specimen be transported if blood gases can be analyzed within 30 minutes from the time of specimen collection
In a plastic syringe at room temperature
If blood gases analysis cannot be analyzed within 30 minutes, why should the health care worker use an airtight container with icy water to transport the arterial specimen
It decreases the loss of gases from the specimen
Assays that require a chilled specimen include
Gastric, ammonia, catecholamine, and lactic acid
To chill a blood specimen as it is transported, the health care worker should use
Icy water or commercial ice pack
Specimens that require protection from light include those for
Bilirubin and vitamin b12
Specimens other than blood may need to be transported by health care workers using special handling procedures. In the laboratory department, these specimens may include
All of the above
When designing a report form for laboratory test results, key elements that would not be included are
Physicians home address and phone number
Specimens being tested in which of the following areas would not usually require centrifugation
Coagulation and hemoatology
For specimens that require centrifugation, serum or plasma should be removed from the cells weighing what period of time
2 hours
It is preferable to make blood smears from EDTA specimens weighing what period of time after the specimen is collected
1 hour
How long does it usually take for a serum specimen (without additives) to form a clot
30-60 minutes
It is best to mix a blood specimen in an additive tube 60 minutes after the venipuncture has occurred
False
It is important to shake the specimen tube vigorously to thoroughly mix blood with an additive
False
A péguenla stress/anxiety can affect the pre-examination phase of laboratory testing
True
Blood specimen tubes without additives do not require mixing
True
Is is preferable for a blood specimen tube to be maintained in a vertical position during handling after the venipuncture
True
