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Serum Concentration of Voriconazole (Pharmacokinetic Monitoring)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of the antifungal drug voriconazole in your blood to ensure it’s at an effective level while minimizing potential side effects.

Quick summary

["Voriconazole levels help doctors manage treatment safely and effectively for infections like aspergillosis or candidiasis."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
53902-3
Short code
Voriconazole CSF-mCnc
Synonyms
Voriconazole CSF-mCnc
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order this test if you’re taking voriconazole to treat or prevent fungal infections. It helps track how much of the drug is in your blood to guide dosing and avoid toxicity.

What to Expect Before the Test

No special preparation is needed. A healthcare professional will draw blood from a vein in your arm. The process usually takes a few minutes and may cause a slight pinch.

What the Results Mean

Results help determine if your voriconazole dose is appropriate. Too low may mean the drug isn’t working, while too high could increase side effects like nausea or liver issues.

Common Uses and Conditions

This test is typically used in patients with fungal infections (e.g., invasive aspergillosis, candidiasis) or those at high risk of fungal infections (e.g., immunocompromised individuals).

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Voriconazole Level

Frequently asked questions

How often will I need this test?
Your doctor will determine the frequency based on your treatment plan, how long you’ve been on voriconazole, and your overall health. Typically, it may be done weekly during initial treatment and less often as you continue.
What are the possible side effects of voriconazole?
High blood levels of voriconazole can cause side effects like nausea, vomiting, or liver problems. Your doctor will monitor your levels closely to avoid these risks.
Can I drink alcohol before this test?
No, avoid alcohol before testing as it may affect test results or increase side effects from voriconazole. Follow your doctor’s instructions for any dietary or lifestyle restrictions.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy