Procalcitonin rises sharply in serious bacterial infections but much less in viral infections.
- Normal range (adults)
- Below 0.5 ng/mL (below 0.5 µg/L)
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- PCT, Procalcitonin Level, Serum Procalcitonin
Procalcitonin normal range
| Group | ng/mLConventional units: US, South Asia | µg/LSI units: UK, Europe, Australia, international |
|---|---|---|
| Adults | Below 0.5 | Below 0.5 |
Your report may use either unit system; labs in the Gulf often print both. Ranges also vary slightly between laboratories, so the range printed on your own report is the one to go by.
Why is the Procalcitonin test done?
It is used in hospitals to help decide whether antibiotics are needed and how long to give them.
What does a high Procalcitonin level mean?
A high procalcitonin suggests a significant bacterial infection or sepsis.
Common causes
- Bacterial infections and sepsis
- Major surgery or trauma
- Severe burns
Diet and lifestyle tips
- This is a hospital test; follow medical treatment
When should you see a doctor?
Results are interpreted by the treating team.
Last updated
This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.