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Fungal Blood Culture with Specific Organism Identification (Gram-Positive Cocci Group)

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

This test checks for the presence of certain types of fungi or bacteria in your blood, specifically focusing on Gram-positive cocci organisms, which may include species like *Staphylococcus* or *Enterococcus*. It helps identify infections that require targeted treatment.

Quick summary

["This test helps diagnose serious bloodstream infections that may need antibiotics or antifungal medications."]

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

Key facts at a glance

LOINC
107186-9
Short code
Fungus Bld Cult org #2
Synonyms
Fungus Bld Cult org #2
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
culture
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like fever, chills, or unexplained infections, especially if you have a weakened immune system, recent surgery, or a medical condition that increases infection risk. It’s also used to confirm infections in people with persistent fevers or unexplained bloodstream issues.

What to Expect Before the Test

No special preparation is needed. You may receive an injection or IV to help your blood grow bacteria or fungi. Blood is drawn from a vein, usually in your arm, and sent to a lab for culture.

What Happens During the Test

Blood samples are placed in special containers that support the growth of microorganisms. Results take several days to weeks, depending on the lab’s process. If growth is detected, further testing (like Gram stain or specific identification) follows to determine the exact organism.

What the Results Mean

Positive results indicate the presence of a fungal or bacterial infection. Negative results mean no detectable growth in the sample. Follow-up tests or treatments may be needed based on the findings.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive fungal blood cultures are critical for diagnosing invasive fungal infections, which can be life-threatening if untreated. Early identification allows for prompt treatment with antifungal medications. Misidentification could delay necessary care, so results are carefully reviewed by medical professionals.

Short name

Fungal Blood Culture (G+ Cocci)

Frequently asked questions

How long does it take to get results from this test?
Results typically take several days to a few weeks, depending on the lab’s process and whether additional testing is needed to identify the exact organism.
Can I take antibiotics before the blood culture is done?
Yes, if you’re prescribed antibiotics, you should avoid taking them before the blood culture to ensure accurate results. Always follow your healthcare provider’s instructions.
What if the blood culture grows no organisms?
If no organisms grow, it may mean you don’t have an active infection in that sample, or the infection may be caused by something not detected by this test. Your provider will discuss next steps based on your symptoms and medical history.
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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