Below the range
Common causes of a low Vancomycin Trough
- Underdosing
- Increased clearance
Looking for the other direction? See what causes a high Vancomycin Trough.
All tests · Therapeutic Drug Levels · Vancomycin Trough
Below the range
What causes a low Vancomycin Trough?
Normal range 10-20 µg/mL (7-14 µmol/L SI). Specimen: Serum (trough, just before next dose). See the full Vancomycin Trough reference page for the taught thresholds and nursing considerations.
What is the normal range for Vancomycin Trough?
The standard teaching reference range for Vancomycin Trough is 10-20 µg/mL in conventional units, or 7-14 µmol/L in SI units. This value is measured in serum (trough, just before next dose).
| Specimen | Serum (trough, just before next dose) |
|---|---|
| Conventional range | 10-20 µg/mL |
| SI range | 7-14 µmol/L |
| Toxicity threshold | > 20 µg/mL raises nephrotoxicity risk |
| Panel | Therapeutic Drug Levels |
Full details, including nursing considerations, on the Vancomycin Trough normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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