Chapter 13

List the test and instruments commonly used in point-of-care testing (POCT).

**See table 13-1

Which of the following statements does not refer to point-of-care testing (POCT)?

A central laboratory must be present

The accrediting agencies that the Center for Medicare and Medicaid Services (CMS) grant deemed status include all of the following EXCEPT:

Center for Disease Control and Prevention (CDC)

The Clinical Laboratory Improvement Amendments (CLIA) regulations are administered by the:

Centers for Medicare and Medicaid Services (CMS)

A decrease in the amount of oxygen reaching the cells can be detected using a(an):

HemoCue

Specimens for activated clotting times performed on the HEMOCHRON Jr. are obtained by:

dermal puncture

The purpose of enzyme immunoassay test for pregnancy is the:

detection of human chorionic gonadotropin

Immunoassay kits must contain all of the following EXCEPT:

extraction solution

The recommended specimen for urine pregnancy testing is a:

first morning specimen

A HemoCue instrument can be used to measure:

glucose and hemoglobin

Which of the following immunoassay kits are designed to detect antibodies?

infectious mononucleosis and Helicobacter pylori

A procedure manual differs from a package insert by containing:

instructions for recording results

The HemoCue can accurately measure hemoglobin concentration in patients with high while blood cell counts because the reaction:

is read at two different wavelengths

A phlebotomist is authorized to perform all of the following test on urine EXCEPT:

microscopic examination

All of the following are point-of-care testing (POCT) for coagulation EXCEPT the:

partial pressure of oxygen (PO2)

When performing point-of-care testing (POCT), a phlebotomist must be sure to document results of:

patient tests quality control electronic controls

A phlebotomist running a test on a standardized specimen received from a monitoring agency is performing:

proficiency testing

When instructing a patient prior to the collection of a specimen for occult blood testing, the phlebotomist should:

provide a list of foods not to be eaten

Advantages of point-of-care testing (POCT) include all of the following EXCEPT:

providing a wider variety of laboratory test

If a phlebotomist is not performing a test correctly, this will be detected through:

quality control

The program established by a laboratories to improve quality of laboratory services through all three phrases of patient testing is:

quality management

To determine the proper maintenance of a glucometer, the phlebotomist should:

read the package insert

Errors in performance of a chemical examination of urine include all of the following EXCEPT:

reading the color reactions at specified times

Blood glucose point-of-care testing (POCT) instruments work on the principle of:

reflectance of color intensity electrical potential of the glucose reaction

The pre-examination phase associated with point-of-care testing (POCT) include all of the following EXCEPT:

reporting results

Failure to obtain quality control results that are within acceptable limits when performing a blood glucose test may be caused by all of the following EXCEPT:

setting the reagent strip code on the monitor

Quality control of point-of-care testing (POCT) should be performed by:

the person performing patient testing

The appearance of a blue color in a Hemoccult test is indicative of:

the presence of blood

The advantage of rapid group A streptococcus kits is that:

the results are available sooner

According to Clinical Laboratory Improvement Amendments (CLIA), a test that can be purchased over the counter for home use is called:

waived

Proficiency testing is required for all levels of Clinical Laboratory Improvement Amendments (CLIA) complexity EXCEPT:

waived

All of the following are advantages of point-of-care testing (POCT) testing EXCEPT:

Increased turnaround time for results

Which of the following patients may have anemia?

Male patient with a hemoglobin of 12 g/dL

List some common point-of-care testing (POCT) errors.

Some of the most POCT errors are misidentification of the patient, incorrect specimen collection, incorrect storage of the reagents used for POCT, not performing or inaccurately performing quality control, improper specimen application, incorrect interpretation of results and incorrect documentation.

Discuss the three phases of laboratory testing. Which of the phases should the phlebotomist really focus on? Explain your answer.

The three phases of testing are pre-examination, examination, post-examination. Pre-examination includes all of the procedures performed prior to testing such as proper identification of the patient, proper tube and specimen collection and proper storage and transport. Examination phase is the phase when the testing is actually being performed. Post examination deals with the interpretation and documentation of the results. It is the pre-examination phase that is most important for the phlebotomist to focus on.

A patient's glucose result of 350 mg/dL is considered

a critical value

Two swabs are collected for rapid streptococcus testing so that:

a routine culture can be performed, if necessary

Point-of-care testing (POCT) for cholesterol testing is performed primarily:

as a health screening test

chemical results of a urinalysis are read:

by comparing with a specified color chart

The standardization of an instrument used for point-of-care testing (POCT) is called:

calibration

Transcutaneous bilirubin testing

cannot be used to monitor the need for an exchange transfusion

Point-of-care testing (POCT) is routinely performed in all of the following areas EXCEPT the:

clinical laboratory

The physical examination of urine includes reports on:

color and appearance

If the Cholestech LDX goes into "Locking" mode, the phlebotomist must:

contact a technical service representative

A urinalysis should be performed:

within 2 hours of specimen collection