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Exam 12: Waived Testing and Collection of Non-Blood Specimens

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Question 21

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An erythrocyte sedimentation rate is

A) the distance RBCs settle in a calibrated tube after one hour
B) the speed at which RBCs move through an automated analyzer
C) how far red blood cells settle in the EDTA tube
D) the percent of red blood cells in a centrifuged capillary tube

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Question 22

Multiple Choice

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A specimen is tested for occult blood and was found to be positive. A brief history on the patient revealed that he had recently had a meal that included steak with horseradish dressing. What is the most appropriate course of action?

A) consult with the physician
B) add a comment onto the results stating the diet history
C) kindly inform the patient of the proper dietary restrictions and have him recollect the specimen
D) cancel the test

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Question 23

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Levels of laboratory testing complexity were established by

The best urine specimen to use for general health assessment is the

False positive results may occur in the fecal occult blood test if patients have ingested (check all that apply) i. alcohol ii. bananas iii. milk iv. horseradish

Testing for human chorionic gonadotropin assesses the status of

A microhematocrit may be performed on blood (check all that apply) i. directly from a dermal puncture ii. collected in a microcollection container iii. collected in an evacuated EDTA tube iv. oosing from the venipuncture site

Patients collecting stool specimens for fecal occult blood should be told to avoid ingesting (check all that apply) i. alcohol ii. aspirin iii. diet drinks iv. vitamin C

Factors that affect the results of an erythrocyte sedimentation rate include (check all that apply)

Erythrocyte sedimentation rates may be performed on blood up to

The most convenient urine specimen to collect is the

A sputum specimen is collected when

Upon removing a reagent strip from its container, you notice that the urobilinogen pad is discolored. What could this indicate? (check all that apply) i. the strip may be out-of-date ii. the strip was used and put back iii. the container may have been left open iv. this is the normal color for urobilinogen pads

The testing classification that is abbreviated PPMP indicates that these tests can be performed by

The Strep screening test is commonly performed on what specimen?

Tests that are classified as "Waived"include (check all that apply)

If urine cannot be delivered to the laboratory within one hour for routine testing it should be (check all that apply) i. refrigerated but not frozen ii. kept at room temperature iii. transferred to a grey stoppered urine tube iv. transferred to a yellow-red stoppered urine tube

A strep screen test is performed by

Chemicals that react with a particular substance in urine to produce a color change are called:

A microhematocrit is