Final answer:
The findings that require follow-up by the nurse are an elevated white blood cell count, which can suggest an infection, and abnormal liver function tests, indicating potential liver issues.
Step-by-step explanation:
When reviewing the client's diagnostic results, the nurse should follow up on any findings outside of the normal range. Of the options provided, the following require follow-up:
- Elevated white blood cell count as it may indicate an infection or inflammatory response.
- Abnormal liver function tests, which could signify potential liver damage or disease.
Findings within the normal range, such as serum sodium and hematocrit, would not typically require immediate follow-up unless there are other related concerns.