Liver-derived acute-phase protein with a half-life of ~19h. Rises within 6h of an acute stimulus and falls rapidly when it resolves. Used to detect and monitor infection, inflammation, and tissue injury.
| Sex | Age | Range | Notes |
|---|---|---|---|
| All | ≥ 18 yrs | < 10 | Normal <10 mg/L; mild elevation 10–40; moderate 40–100; severe >100 |
⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.