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Bacteriaocfluaerobecult

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

This test detects and identifies bacteria in eye fluid to diagnose eye infections.

Quick summary

{"A sample of fluid from your eye is collected and tested for bacterial growth","The test helps doctors identify the specific bacteria causing an eye infection","Results guide proper antibiotic treatment","Results typically take 2-5 days","The test is performed when an eye infection is suspected"}

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

Key facts at a glance

LOINC
88141-7
Short code
OCBAC
Synonyms
Bacteria Ocflu Aerobe Cult
Category
chemistry
Sample
serum
Container
Sterile transport container, blood culture bottle, or specific ophthalmic culture transport system; inoculated onto appropriate media at bedside when possible
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
≥ 0 years
Method
aerobic-culture
CPT
87070
SNOMED
399135006
Specimen volume
0.1-0.5 mL of ocular fluid (aqueous or vitreous humor); minimum 0.1 mL
Stability
Immediate inoculation preferred; if delayed, transport at room temperature (20-25°C) for up to 2 hours; refrigerate at 2-8°C if transport exceeds 2 hours; do not freeze
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
48–168 hours
Order
routine

What is this test?

An eye fluid bacterial culture is a laboratory test that detects and identifies bacteria in fluid collected from your eye. The test uses aerobic culture methods, meaning it grows bacteria in the presence of oxygen. This helps doctors determine exactly what type of bacteria is causing an infection, if one is present.

How is the sample collected?

A healthcare provider will collect a small sample of fluid from your eye using a sterile needle and syringe. This procedure is called an aqueous or vitreous tap, depending on which part of the eye is sampled. The area will be numbed with eye drops first to minimize discomfort. The sample is then sent to a laboratory for testing.

What happens in the laboratory?

In the lab, the sample is placed in special culture dishes and incubated at body temperature. If bacteria are present, they will multiply and form visible colonies. Technicians then identify the specific type of bacteria and perform sensitivity testing to determine which antibiotics will effectively treat the infection.

What do the results mean?

A positive result means bacteria were found in your eye fluid, confirming a bacterial eye infection. The report will identify the specific bacteria and list effective antibiotics. A negative result means no bacteria were detected, which could mean your infection is caused by viruses, fungi, or other causes, or that the infection is responding to treatment.

Reference range

No growth of pathogenic bacteria; interpretation reported as organism identified with colony count when applicableN/A

Specimen: serum

Aseptic collection of ocular fluid (aqueous or vitreous humor) by ophthalmologist via anterior chamber tap or vitreous tap. Topical anesthesia typically applied. Inform patient of procedure risks including infection, hemorrhage, and retinal detachment

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings2

Frequently asked questions

Is the eye fluid collection procedure painful?
Your eye will be numbed with anesthetic eye drops before the procedure, so you should feel minimal discomfort. You may feel some pressure during the collection, but it is generally well-tolerated.
How long does it take to get results?
Bacterial culture results typically take 2-5 days. Bacteria need time to grow in the laboratory, and additional time may be needed for identification and antibiotic sensitivity testing.
What happens if the test is negative?
A negative result means no bacteria were detected. Your doctor will consider other possible causes of your symptoms, such as viral infections, fungal infections, or non-infectious inflammatory conditions, and may recommend additional tests or treatments.
Do I need to prepare for this test?
No special preparation is needed. Simply follow your doctor's instructions about any eye medications you are using. Inform your doctor of any eye conditions or previous eye surgeries you have had.
Can this test detect all types of infections?
This test specifically looks for aerobic bacteria. It does not detect viruses, fungi, or anaerobic bacteria (bacteria that grow without oxygen). If your doctor suspects these other types of infections, different tests may be needed.
  1. 1
    American Academy of Ophthalmology - Eye Infection InformationSource
  2. 2
    Mayo Clinic - Laboratory Tests: Aerobic Bacterial CultureSource
  3. 3
    MedlinePlus - Eye InfectionsSource

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