6.3 Specimen Collection & Basic Care
Key Takeaways
- The CNA collects routine urine and stool specimens; label at the bedside, use the correct container, follow standard precautions, and deliver promptly.
- A clean-catch (midstream) urine specimen requires perineal cleaning, starting the stream, then catching the middle portion in a sterile cup.
- A 24-hour urine collection discards the first void, then saves every void for 24 hours, kept on ice or refrigerated per policy; one missed void voids the test.
- Blood glucose monitoring is outside the basic Florida CNA scope unless the CNA holds additional state-approved training and facility authorization.
- Mislabeled, contaminated, or delayed specimens give false results — accuracy and prompt delivery to the lab are part of the CNA's responsibility.
Specimen Collection Within the CNA Scope
CNAs routinely collect urine and stool specimens. The exam tests correct technique, infection control, and labeling — a contaminated or mislabeled specimen leads to wrong treatment. Always wear gloves, follow standard precautions, label the container at the bedside with the resident's full identifiers, and deliver it to the lab or designated area promptly.
Urine Specimen Types
| Type | Key Technique |
|---|---|
| Routine (random) | Resident voids into a clean container; any time of day |
| Clean-catch (midstream) | Clean the perineal area, begin the stream into the toilet, then catch the middle portion in a sterile cup |
| 24-hour | Discard the first void to start timing; collect every void for 24 hours; keep cool/refrigerated per policy |
For a clean-catch, the goal is a specimen free of skin and perineal contamination. For a 24-hour collection, one missed void invalidates the entire test and it must restart — explain this clearly to the resident and post a reminder per facility policy.
Stool Specimen
Have the resident void first so urine does not contaminate the sample, then collect stool into a clean bedpan or specimen hat. Use the tongue blade or scoop to transfer the required amount to the container without touching the inside. Note color, consistency, and any blood, and report abnormal findings.
Blood Glucose — Know the Scope Limit
Finger-stick blood glucose monitoring involves a skin puncture and a blood sample. In the basic Florida CNA scope of practice, blood glucose testing is not a routine CNA task. Some Florida facilities allow it only when the CNA has completed additional state-approved training, is competency-checked, and is specifically authorized in writing by the facility and the nurse.
The Safe Exam Answer
- If a question asks whether a basic CNA performs a finger-stick glucose check, the safe answer is that it is outside the basic CNA scope unless additionally trained and authorized.
- The CNA does observe and report signs of low blood sugar (shakiness, sweating, confusion, weakness) and high blood sugar (excessive thirst, frequent urination, drowsiness) to the nurse.
- The CNA does help the nurse by reporting whether the resident ate, and by following the diabetic care plan (meal timing, foot care, skin checks).
Scope-of-Practice Principle
A recurring Florida exam theme: when a task involves invasive procedures, sterile technique, medication, or clinical judgment, it is usually outside the CNA scope. The correct CNA action is to observe accurately, report to the nurse, and stay within trained and authorized tasks. Performing a task you are not authorized to do puts the resident at risk and your registry standing in jeopardy.
Specimen Accuracy Recap
| Error | Consequence |
|---|---|
| Wrong or missing label | Specimen rejected or wrong resident treated |
| Contaminated clean-catch | False-positive infection result |
| Missed void in 24-hour collection | Entire test invalid, must restart |
| Delayed delivery to lab | Sample degrades, inaccurate result |
A nurse asks a basic, newly certified Florida CNA with no additional training to perform a finger-stick blood glucose check. What is the most appropriate response?
During a 24-hour urine collection, the resident accidentally voids in the toilet and the urine is flushed. What is the correct action?