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Throat swab culture with antimicrobial susceptibility testing (qualitative)

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

This test checks for bacteria in your throat and helps determine which antibiotics would be most effective if needed.

Quick summary

["Identifies potential infections and guides treatment options."]

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

Key facts at a glance

LOINC
89648-0
Short code
C trach Throat Ql Cult
Synonyms
C trach Throat Ql Cult
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
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 Measures

A sample of cells and bacteria is collected from your throat using a swab. The lab grows these samples in a controlled environment to identify any bacteria present. If bacteria are found, additional testing determines how they respond to different antibiotics.

Why It’s Done

Your healthcare provider may recommend this test if you have symptoms like sore throat, fever, or difficulty swallowing, especially if antibiotics are being considered. It helps rule out bacterial infections that require treatment.

Sample Collection and Preparation

You’ll likely have a quick, painless procedure where a swab is gently rubbed on the back of your throat. The swab is then sent to the lab for culture and sensitivity testing.

How Results Are Used

Results help confirm whether a bacterial infection is present and guide decisions about starting antibiotics. If bacteria are found, the test provides information on which antibiotics are most likely to work effectively.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Throat Culture (with Antibiotics Sensitivity)

Frequently asked questions

How long does it take to get results?
Results typically take 2–5 business days, depending on lab processing times. Some labs may offer preliminary findings sooner, but final sensitivity results can take longer.
What does a positive test mean?
A positive test means bacteria were identified in your throat sample. This does not always mean you need antibiotics immediately—your healthcare provider will consider symptoms, other tests, and culture results before deciding on treatment.
Can I eat or drink before the test?
You can eat and drink normally before the test, as it involves a quick throat swab. Avoiding alcohol or medications that may affect throat irritation is recommended if advised by your provider.
  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