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Fungal culture with qualitative identification and susceptibility testing (serum/plasma)

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

This test checks for the presence of fungi in your blood and determines if any identified fungi are resistant to certain medications.

Quick summary

["Helps diagnose fungal infections and guide treatment choices."]

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

Key facts at a glance

LOINC
106049-0
Short code
Fungus Tiss Ql KOH Prep
Synonyms
Fungus Tiss Ql KOH Prep
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
koh-preparation
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

What This Test Does

A fungal blood culture involves growing samples of your blood in a controlled environment to detect and identify fungal organisms. If fungi are found, the test also assesses their sensitivity to antifungal drugs to tailor treatment.

How the Test Works

Your blood sample is collected and split into multiple containers. These containers are incubated to allow any fungi present to grow. After a few days, if fungi are detected, they are identified and tested against a panel of antifungal medications to determine effectiveness.

When You Might Need This Test

This test is typically recommended if you have symptoms like fever, chills, or unexplained infections, especially if you have a weakened immune system, recent surgery, or underlying conditions like cancer or diabetes. Doctors may also order it if you’ve been exposed to fungal infections or are taking medications that increase your risk.

Preparation for the Test

No special preparation is needed for this test. You may have a small needle inserted into a vein in your arm to draw blood, similar to other blood tests. You can eat and drink normally before the procedure.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Fungal blood cultures are crucial for diagnosing serious fungal infections, such as candidiasis or invasive aspergillosis, which can be life-threatening if untreated. Early identification allows for prompt and effective treatment, reducing the risk of complications and improving recovery outcomes. Results help healthcare providers select the most appropriate antifungal therapy based on the identified organism and its susceptibility profile.

Short name

Fungal Blood Culture

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of fungi in your blood, which may suggest a fungal infection. This requires further medical evaluation to determine the type of fungus and appropriate treatment. Your healthcare provider will discuss next steps based on the findings.
How long does it take to get results?
Results can take several days to a week or more, depending on the growth and identification process. You may be advised to stay under observation or receive initial treatment while waiting for definitive results.
Can I have this test if I’m on antibiotics?
Yes, but your doctor may need to adjust your treatment plan. Antibiotics and antifungal medications can sometimes interfere with each other, so it’s important to inform your healthcare provider about all medications you’re taking.
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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