CNA CNA Medical Lab and Specimen Collection Skills 2

Question 1

When performing blood glucose monitoring with a glucometer, what is the preferred site for obtaining a finger-stick blood sample?

Accepted Answer

The side of the fingertip (lateral aspect)

Answer

The lateral (side) aspect of the fingertip is preferred for glucose monitoring because it has fewer nerve endings than the center, causing less pain, while still providing adequate blood flow. The center pad has more nerves, making it more painful.

Question 2

After performing a blood glucose check with a glucometer, what should the CNA do with the lancet?

Accepted Answer

Place it immediately into the sharps container without recapping

Answer

Lancets must be placed directly into an approved sharps container immediately after use, without recapping. Recapping is a leading cause of needle-stick injuries. Bending needles is also prohibited. Sharps containers prevent injuries to healthcare workers and housekeeping staff.

Question 3

A CNA records a blood glucose reading of 48 mg/dL. What action should be taken FIRST?

Accepted Answer

Report the value to the nurse immediately

Answer

A blood glucose of 48 mg/dL is critically low (hypoglycemia — normal fasting is 70-100 mg/dL). The CNA must immediately report this critical value to the nurse, who will then determine the appropriate intervention. A CNA does not independently administer treatments for critical values.

Question 4

Which of the following is correct regarding proper labeling of a specimen?

Accepted Answer

Label the specimen container at the patient's bedside immediately after collection

Answer

Specimens must be labeled immediately after collection, in the patient's presence and at the bedside. Pre-labeling before collection risks mix-ups. Post-labeling away from the patient risks errors in identification. Bedside labeling ensures the right specimen goes with the right label.

Question 5

What personal protective equipment (PPE) is required when handling any patient specimen?

Accepted Answer

Gloves at minimum; mask and eye protection if splashing is possible

Answer

Standard precautions require gloves as the minimum PPE when handling any body fluid or specimen. If splashing or aerosolization is possible (sputum collection, large volumes), a mask and eye/face protection should be added. A gown is added if clothing contamination is likely.

CNA Practice Test

CNA Practice Test

CNA CNA Medical Lab and Specimen Collection Skills 2