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Sputum Culture and Sensitivity (with Tracheal Aspirate)

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

This test helps identify and check for the growth of bacteria in your sputum or tracheal secretions, which can help guide treatment for infections like pneumonia or bronchitis.

Quick summary

["This test helps determine if you have an infection and what type of antibiotic may work best."]

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

Key facts at a glance

LOINC
6602-7
Short code
FLUV Sputum trach asp Cult
Synonyms
FLUV Sputum trach asp Cult
Category
chemistry
Sample
sputum
Container
Sterile sputum container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
Specimen volume
3-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of a respiratory infection, such as coughing up mucus, fever, or difficulty breathing. It’s often used when antibiotics are needed to treat infections like pneumonia or bronchitis caused by bacteria.

What to Expect During the Test

You’ll likely be asked to cough into a sterile container or have a small sample taken from your trachea (windpipe) using a thin tube. The sample is then sent to a lab to grow bacteria and check for drug resistance.

How the Results Are Used

Results show which bacteria (if any) are present and whether they’re sensitive or resistant to common antibiotics. This helps your doctor choose the best treatment to fight your infection.

Common Conditions This Test Helps Diagnose

This test is primarily used to diagnose bacterial infections in the lungs or airways, such as pneumonia, bronchitis, or other respiratory tract infections.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Sputum Culture & Sensitivity

Frequently asked questions

How long does it take to get results from this test?
Results typically take 3–10 business days, depending on lab processing and bacterial growth. Some labs may provide preliminary findings sooner.
What does it mean if my test shows no bacteria?
No bacterial growth could mean your infection is viral (like a cold) or caused by another factor (e.g., fungi, mold). Your doctor may adjust treatment or recommend further testing.
Can I take antibiotics before my test?
Yes, but it may affect results. If you’ve already taken antibiotics, tell your doctor—this could change how the test is interpreted or processed.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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