Culture Aerobic Ear Test
Also known as: Ear Swab Culture, Aerobic Ear Culture and Sensitivity, Ear Swab Aerobic Culture Test, Otitis Culture Test
Culture Aerobic Ear Test test available at DNA Labs India for ₹936. Uses Conventional Culture, Automated Identification, Antibiotic Sensitivity Testing on Ear swab inoculated in special Aerobic Transport Medium (available from LPL). Specify left or right ear swab on transport medium vial and test request form. Ship refrigerated. samples. Results in Sample daily by 3:30 PM; Report within 3 days. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Kothari Ramesh Shantilal
Consultant Microbiologist · Reg: 27670
Last reviewed: September 7, 2026
Overview
The purpose of the Culture Aerobic Ear Test is to identify the specific aerobic bacteria causing an ear infection and to determine which antibiotics are most effective against the identified organism. This enables targeted antibiotic therapy, improves treatment outcomes, and helps prevent antibiotic resistance. The test includes antibiotic sensitivity testing when indicated.
- Test Code
- 385
- CPT Code
- 87070
- ICD Code
- H66.90
- Price
- ₹936
- Sample Type
- Ear swab inoculated in special Aerobic Transport Medium (available from LPL). Specify left or right ear swab on transport medium vial and test request form. Ship refrigerated.
- Result Time
- Sample daily by 3:30 PM; Report within 3 days
- Fasting Required
- No
- Method
- Conventional Culture, Automated Identification, Antibiotic Sensitivity Testing
Sample Collection
No special preparation is required. Inform your physician about any current antibiotic use or ear drops being used. Avoid cleaning the ear canal with cotton swabs or antiseptic solutions prior to sample collection.
Method: Swab collection from ear canal by trained phlebotomist or physician
Laboratory Analysis
A trained healthcare professional will gently insert a sterile swab into the ear canal to collect the discharge or surface sample. The swab is then placed into a special Aerobic Transport Medium vial. The affected ear (left or right) must be specified on the vial and the test request form.
Report Delivery
The sample is shipped refrigerated to the laboratory. No specific post-collection care is needed. You may resume normal activities immediately. Avoid inserting anything into the ear until advised by your physician.
Timeline: Sample daily by 3:30 PM; Report within 3 days
Patient Instructions
About This Test
Who Should Get This Test
The purpose of the Culture Aerobic Ear Test is to identify the specific aerobic bacteria causing an ear infection and to determine which antibiotics are most effective against the identified organism. This enables targeted antibiotic therapy, improves treatment outcomes, and helps prevent antibiotic resistance. The test includes antibiotic sensitivity testing when indicated.
How to Prepare
- Specify the affected ear (left or right) on the transport medium vial and test request form
- Use only the Aerobic Transport Medium swab supplied by the laboratory (LPL)
- Do not use cotton swabs, ear drops, or antiseptics before sample collection
- Ship the sample under refrigerated conditions (2–8°C)
- Inform the phlebotomist about any recent antibiotic use
- Ensure the swab is placed securely in the transport medium after collection
Doctor's Notes
Reviewed by Dr Kothari Ramesh Shantilal — MBBS, MD (Microbiology) · Reg. No. 27670
"Ear infections are among the most common reasons for clinic visits. A culture aerobic ear swab test is critical when empirical antibiotics fail or when a resistant organism is suspected. It helps identify the causative pathogen and guides targeted antibiotic therapy, reducing the risk of treatment failure and antimicrobial resistance. If you have persistent ear pain, discharge, or hearing loss, consult your ENT specialist and get this test done promptly."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Sample received without proper labeling (left/right ear not specified)
- Sample collected in expired or inappropriate transport medium
- Sample received at room temperature after more than 2 hours
- Leaking or damaged transport medium vial
- Sample contaminated due to improper collection technique
Understanding Your Results
No growth
No aerobic bacterial pathogen was detected. The infection may be viral, fungal, or caused by anaerobic bacteria. Clinical correlation is advised.
Single organism identified with sensitivity
A specific bacterial pathogen has been identified. Antibiotic sensitivity results indicate which antibiotics will be effective for treatment.
Multiple organisms identified
Polymicrobial infection detected. Treatment should be guided by the sensitivity pattern of the predominant pathogen. Clinical correlation recommended.
Resistant organism detected
The identified organism shows resistance to commonly used antibiotics. Treatment should be adjusted based on the sensitivity report to avoid treatment failure.
Commensal flora only
Only normal ear flora was isolated. This typically does not indicate active infection. Clinical assessment is recommended.
Consult your doctor or ENT specialist if you experience persistent ear pain, discharge from the ear, hearing loss, fever, dizziness, or if your ear infection does not improve after a course of antibiotics. Recurrent ear infections also warrant medical evaluation and culture testing.
Limitations
- ⚠This test detects aerobic bacteria only; anaerobic organisms will not be identified with this method
- ⚠Fungal and viral causes of ear infection are not detected by aerobic culture
- ⚠Results may take up to 3 days, which may delay treatment in acute severe cases
- ⚠A negative culture does not entirely rule out infection if prior antibiotics were administered
- ⚠Polymicrobial infections may complicate interpretation of results
Risks & Considerations
- ●Minimal risk; slight discomfort during swab insertion
- ●Rare possibility of minor bleeding if the ear canal is inflamed
- ●No significant complications associated with this diagnostic procedure
Interfering Factors
- ●Recent or concurrent use of topical or systemic antibiotics may suppress bacterial growth and yield false-negative results
- ●Improper sample collection technique may introduce contaminants or fail to capture the causative organism
- ●Sample storage at room temperature for prolonged periods may reduce organism viability
- ●Use of ear drops (antiseptic or medicated) shortly before sample collection
- ●Concurrent fungal infection may require additional fungal culture
Compare With Similar Tests
| Test | Culture Aerobic Ear Test | Culture Anaerobic Ear Test | Fungal Culture Ear Test | Gram Stain Ear Swab | CT Temporal Bone |
|---|---|---|---|---|---|
| Comparison | Culture Aerobic Ear Test |
Frequently Asked Questions
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