A client reports feeling numbness and tingling in the extremities. Which of the client's serum laboratory values should the practical nurse (PN) review before reporting the finding?

A. White blood cell count (WBC): WBC levels reflect immune function and infection status but do not explain neurologic symptoms such as numbness or tingling. Reviewing this value would not directly help determine the cause of the client’s reported sensations. B. Albumin and protein: Low albumin and protein levels indicate poor nutritional status but are not directly linked to acute neurological symptoms like paresthesia. These values are more relevant for assessing edema, wound healing, or chronic illness. C. Electrolytes: Abnormal electrolyte levels, especially calcium, potassium, and sodium, can cause nerve and muscle irritability leading to numbness, tingling, or weakness. Reviewing electrolyte results helps identify possible imbalances that could explain the client’s symptoms. D. Hematocrit: Hematocrit reflects red blood cell concentration and oxygen-carrying capacity. While severe anemia may cause fatigue or dizziness, it is less likely to cause peripheral numbness or tingling compared to electrolyte disturbances.