Phlebotomy Test Point of Care Testing 2

Question 1

Which POCT test is used to monitor patients on heparin therapy in an acute care setting?

Accepted Answer

Activated clotting time (ACT)

Answer

INR

Answer

D-dimer

Answer

Fibrinogen level

Question 2

When using a glucose meter for POCT, the operator must enter a lot number or scan a barcode before testing. This step primarily ensures:

Accepted Answer

The correct calibration data matches the test strips in use

Answer

Patient identification is recorded

Answer

The QC has been performed within 24 hours

Answer

The meter's battery level is adequate

Question 3

A POCT urine dipstick result shows leukocyte esterase 2+ and nitrite positive. These findings together are MOST consistent with:

Accepted Answer

Urinary tract infection

Answer

Nephrotic syndrome

Answer

Glomerulonephritis

Answer

Renal tubular acidosis

Question 4

What is the purpose of running both high and low controls on a POCT device?

Accepted Answer

To verify the device performs accurately across the reportable range

Answer

To calibrate the device before each patient test

Answer

To determine if patient samples need dilution

Answer

To check the battery and display function

Question 5

Which specimen type is required for a fingerstick HbA1c test at the point of care?

Accepted Answer

Capillary whole blood

Answer

Serum from a red-top tube

Answer

Plasma from a lavender-top tube

Answer

Urine sample

Question 6

A phlebotomist notices that the POCT glucose test strips expired yesterday. The correct action is to:

Accepted Answer

Discard them and use a new, in-date lot of strips

Answer

Use them for one more day since they are only slightly expired

Answer

Perform extra QC runs to verify the strips still work

Answer

Notify the supervisor but continue using them for patient testing

Question 7

In a POCT setting, delta check refers to:

Accepted Answer

Comparison of a patient's current result with their previous result

Answer

The difference between high and low QC values

Answer

The allowable error range for a QC result

Answer

Calibration verification performed quarterly

Question 8

Which of the following factors can cause a falsely LOW glucose reading on a POCT glucose meter?

Accepted Answer

Elevated hematocrit (polycythemia)

Answer

High altitude

Answer

Elevated uric acid levels

Answer

Dehydration