Fluconazole Concentration in Serum
This test measures the amount of the antifungal medication fluconazole in your blood serum. It helps your healthcare provider monitor your dose and adjust it if needed.
["This test ensures your fluconazole levels stay within safe ranges for effective treatment and to avoid side effects."]
Key facts at a glance
- LOINC
- 5231-6
- Short code
- FLUCV Ab Titr Ser CF
- Synonyms
- FLUCV Ab Titr Ser CF
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- comp-fix
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your doctor may order this test if you’re taking fluconazole to treat or prevent fungal infections, such as yeast infections (e.g., thrush or vaginal candidiasis). It helps track how well your body is processing the medication and whether your dose needs adjustment, especially if you have kidney issues or take other medications that interact with fluconazole.
What to Expect Before the Test
No special preparation is needed. You’ll have a small needle inserted into your arm or vein to draw a blood sample. The process is quick and usually painless. If you’re on blood thinners or have a history of bleeding issues, let your doctor know before the test.
What Happens During the Test?
A healthcare professional will collect a blood sample from your arm or vein. The sample is then sent to a lab where it’s analyzed using a sensitive immunoassay method to measure fluconazole levels.
What Do the Results Mean?
Results are typically reported in micrograms per milliliter (mcg/mL). Your doctor will interpret the results in relation to your medical condition, dose, and other medications you’re taking. Low levels may indicate the medication isn’t working effectively, while high levels could signal toxicity or improper dosing.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Fluconazole is used to treat fungal infections, and maintaining appropriate blood levels is critical. Low levels may mean the infection isn’t fully controlled, while dangerously high levels can cause side effects like nausea, headaches, or liver issues. Regular monitoring helps prevent these risks and ensures the medication is working as intended.
Short name
Fluconazole Level
Frequently asked questions
How often is this test typically done?
What if I miss my scheduled test?
Can I drink alcohol before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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