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MHA Phlebotomist
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“It‟s time for Lab Test! The classic game show where you match tubes to tests! I‟m your host Kimi Stry! Ok, players ready to pass your Lab Test? The test is uric acid; what's the match?”
SST/Chemistry lab.
Lavender/ Chemistry lab.
Green/Serology.
A blood sample drawn for a uric acid would be drawn in a SST and sent to the chemistry laboratory.
“It‟s time for Lab Test! The classic game show where you match tubes to tests!
I‟m your host Kimi Stry! Ok, players ready to pass your Lab Test? The test is A1C; what‟s the match?”
Green/chemistry lab.
Lavender/chemistry lab.
Red / hematology lab.
A blood sample drawn for an A1C (hemoglobin A1C) is drawn in a lavender top tube and sent to the chemistry laboratory.
79. Which of the following phrases describes the pre-analytical phase of
laboratory testing?
The phase of laboratory testing that involves phlebotomists
One of two phases necessary for laboratory testing
The phase involving all processes of laboratory testing
All of the above
The pre-analytic phase of laboratory testing is the first of the two phases that cover all processes of laboratory testing. The first phase includes test ordering, specimen collection, and processing of the samples. The second phase is the analytic phase, which includes the actual testing and reporting of results.
Which of the following examples is a pre-analytical variable?
Patient did not maintain the designated fasting period for a fasting sample.
Light sensitive sample not protected from light.
Elevated result not reported immediately
A and B
A patient eating during the fasting period necessary for a fasting specimen and not protecting a light-sensitive specimen from light, are two examples of pre- analytical variables. Pre-analytical variables account for most laboratory errors.
Blood gas samples, gastrin samples, ammonia samples, and lactic acid samples
are all blood samples that require which special transportation considerations?
All must be transported in ice water.
All must be transported warmed.
All require protection from light.
Some blood analytes break down quickly; transporting the specimen in ice water slows that process. Other tests that require chilled transportation include renin, catecholamine, and parathyroid.
82. A physician just called Phil the New Phlebotomy Tech‟s supervisor. The physician was very upset, because he didn‟t receive a critical lab result. This is an example of what kind of variable?
Pre-analytical
Analytical
Not informing a physician of laboratory results is an analytical variable.
“It‟s time for Lab Test! The classic game show where you matching tubes to
tests! I‟m your host Kimi Stry! Ok, players ready to pass your Lab Test? The test is RA; what‟s the match?”
Red/Hematology
Blue/Chemistry
Red/Serology
Blood drawn for an RA would be drawn in red-topped specimen container and sent to serology.
Labeling a sample at the bedside is an example of which variable control?
Pre-analytic
Analytic
Requiring phlebotomists to label specimens at the bedside to avoid specimen mix- ups and unlabeled specimens is a method of controlling a pre-analytic variable.
85. What is point-of-care testing?
Testing that is done to pinpoint an area of patient care
Testing that is done in the presence of a patient
Testing that can only be done by the patient
None of the above
Point-of-care testing (POCT) is testing that is done in the presence of a patient. POCT can be done by the patient in their own home or by a provider in a care setting, such as a doctor‟s office or public health event.
The preanalytical testing phase includes all of the following EXCEPT:
Specimen collection
Verifying test results
Specimen labeling
Specimen processing
The preanalytical testing phase includes specimen collection, specimen labeling, and specimen processing, but notverifying test results. The preanalytical phase of specimen testing happens from the time the physician orders the test until the results are delivered to the physician. Verifying test results belongs to the analytical phase of testing and involves a review of the acceptability of test results.