Antonyms for the term "serum phosphorus level" include high phosphorus levels, elevated phosphorus levels, or hyperphosphatemia. Conversely, low phosphorus levels, decreased phosphorus levels, or hypophosphatemia can be antonyms for serum phosphorus level. Phosphorus is an essential mineral that aids in various bodily functions such as energy production, bone formation, and kidney function. High phosphorus levels can result from various medical conditions such as kidney disease, excessive vitamin D intake, and certain medications. In contrast, low phosphorus levels can arise from malnutrition, alcoholism, and certain medical conditions such as hypothyroidism. Accurate monitoring and management of serum phosphorus levels are critical in maintaining overall health and wellness.