What laboratory value should the nurse report to the nephrologist?

Serum creatinine levels are a critical indicator of renal function. A serum creatinine level of 2.1 mg/dL suggests impaired kidney function, as it is elevated above the normal range for adults, which is typically around 0.6 to 1.2 mg/dL. This elevation can indicate acute or chronic kidney injury and may require further evaluation and management by a nephrologist.

Monitoring and responding to changes in serum creatinine is essential in managing patients with renal issues, as it directly reflects the ability of the kidneys to filter waste products from the bloodstream. An elevation in creatinine levels can lead to complications such as fluid overload, electrolyte imbalances, and the potential need for renal replacement therapy. It is crucial for a nephrologist to assess this abnormal laboratory value to determine appropriate interventions.

In contrast, a serum potassium level of 4.5 mEq/L is within the normal range, indicating no immediate concern. Similarly, a serum sodium level of 138 mEq/L and a serum bicarbonate level of 24 mEq/L are also within normal limits, suggesting that these values do not require urgent reporting or intervention.