Unit 6 - Pre-analytical Considerations in Phlebotomy Flashcards
The testing process begins for the laboratory when a test is ordered and ends when testing begins.
Preanalytical phase
Numerous factors associated with this phase of the testing process, if not properly addressed, it can lead to which of the following:
A. Errors that can compromise specimen quality.
B. Jeopardize the health and safety of the patient.
C. Ultimately increase the cost of medical care.
D. A and B only
E. All of the above
E.
A phlebotomist must have the technical skills needed to perform a blood draw, the ability to recognize __________ factors and address them, if applicable, to avoid or reduce any negative impact.
Preanalytical
T/F
Most tests are performed to confirm health or to screen for, diagnose, or monitor disease.
T
T/F
To be properly evaluated, test results typically need to be compared with results expected of healthy individuals.
T
T/F
Result values for most tests are established using specimens from normal, healthy individuals.
T
T/F
Results vary somewhat from person to person
T
Used for comparison become a range of values with high and low limits.
Reference RANGE or reference INTERVAL
Most reference ranges are for _____.
Healthy fasting individuals
Although less common, some tests have reference ranges for specific situations, such as patients who are ill or those being treated for certain disorders, such as __________.
Diabetes
T/F
One way a physician evaluates a patient’s test results is by comparing them to reference ranges and, if applicable, previous results on the same patient also.
T
T/F
If a specimen has been compromised and the results are not valid, a physician could make a decision based upon incorrect information and thus jeopardize the patient’s care.
T
__________ the resting metabolic state of the body early in the morning after fasting for approximately __ hours.
Basal; 12
Ideal for establishing reference ranges on inpatients because the effects of diet, exercise, and other controllable factors on test results are minimized or eliminated.
Basal-state specimen
Basal state is influenced by a number of physiologic patient variables such as __________, __________, and __________ that cannot be eliminated.
Age, gender, and conditions of the body
__________ specimens are not basal-state specimens and may have slightly different reference ranges.
Outpatient
T/F
Values for some blood components vary considerably depending upon the age of the patient.
T
Values that are normally higher in newborns than in adults.
RBC
WBC
Some physiological functions such as _____ function decrease with age.
Kidney or renal
A measure of kidney function that is directly related to the age of the patient, which must be factored in when test results are being calculated.
Creatinine clearance
T/F
Test results for some blood analytes show significant variation at higher elevations compared with results at sea level.
T
RBC count is elevated in _____ altitude.
Higher
T/F
Decreased oxygen levels at higher altitudes cause the body to produce more RBCs to meet the body’s oxygen requirements.
T
T/F
The higher the altitude, the greater the increase.
T