Which of the following lab findings would most likely warrant further investigation for a pregnant client?

An increased white blood cell count in a pregnant client could indicate an underlying issue that warrants further investigation. During pregnancy, it is common for white blood cell counts to rise slightly as part of the body's natural adaptation to support both the mother and the developing fetus. However, significantly elevated levels, particularly those far above the normal range, may signal an infection, inflammation, or other medical conditions such as preeclampsia or leukemias.

In contrast, normal glucose levels suggest that there is no immediate concern regarding the mother's glucose metabolism, therefore, no further investigation is typically warranted in that area. Stable liver function tests indicate that there is no sign of liver disease or dysfunction, which minimizes concern for complications related to hepatobiliary issues. Elevated hemoglobin levels, while sometimes indicative of potential issues such as dehydration or a condition called polycythemia, do not usually pose an immediate threat warranting extensive investigation unless they are significantly outside the normal range or present with symptoms. Thus, the increase in white blood cells stands out as a finding that should prompt additional assessment to ensure maternal and fetal well-being.