What is Serum Phosphorus (Phosphorus)?
Serum Phosphorus is measured as part of a bone & minerals panel. Your phosphorus is in a healthy range — important for bones and energy.
What does a high Serum Phosphorus mean?
Your phosphorus is elevated. This is most commonly related to reduced kidney function and is interpreted with your calcium and kidney results.
If markedly elevated: Your phosphorus is very high, which is most often linked to significant kidney impairment and should be reviewed promptly.
What does a low Serum Phosphorus mean?
Your phosphorus is low, which can result from poor intake, vitamin D deficiency, or certain hormonal conditions.
Understand your whole report, not just one number
A single value rarely tells the full story — Serum Phosphorus is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.