Bacteriathroataerobecultorg2
A throat culture is a laboratory test to identify bacteria causing a throat infection.
{"The test collects a sample from your throat using a swab","It helps identify if bacteria are causing your sore throat","Results help doctors decide if you need antibiotics","The test is safe with minimal discomfort","Results typically take 2-3 days"}
Key facts at a glance
- LOINC
- 17899-6
- Short code
- THRCX2
- Synonyms
- Bacteria Throat Aerobe Cult org #2
- Category
- chemistry
- Sample
- serum
- Container
- Sterile transport swab in Amies or Stuart's transport medium (e.g., Copan ESwab, BD CultureSwab)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–120 years
- Method
- aerobic-culture
- CPT
- 87070
- SNOMED
- 43461000119105
- Specimen volume
- One throat swab; adequate sample requires visible material on swab tip from posterior pharynx and tonsillar areas
- Stability
- Room temperature: 2 hours; Refrigerated (2-8°C): 24-48 hours. Do not freeze. Maintain transport medium moisture and submit to laboratory as soon as possible.
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 48–96 hours
- Order
- routine
What is this test?
A throat bacteria culture, also called a throat swab culture, is a diagnostic test that collects a small sample of cells and mucus from the back of your throat using a sterile swab. This sample is then sent to a laboratory where it is placed in a special environment that allows bacteria to grow, if present. The laboratory can then identify the specific type of bacteria causing your infection, which helps your doctor determine the most appropriate treatment.
Why might I need this test?
Your doctor may recommend a throat culture if you have symptoms of a bacterial throat infection, such as a severe sore throat, difficulty swallowing, fever, swollen lymph nodes, or white patches on your tonsils. This test is particularly important because it can distinguish between a bacterial infection (like strep throat) and a viral infection (like the common cold). Bacterial infections often require antibiotics, while viral infections do not. This test helps prevent unnecessary antibiotic use and ensures you receive the right treatment.
How is the test performed?
During the test, you will be asked to open your mouth wide. A healthcare professional will use a sterile cotton swab to gently rub the back of your throat and your tonsils to collect a sample. You may feel a brief gagging sensation, but the procedure only takes a few seconds. The swab is then placed in a sterile container and sent to a laboratory for analysis. In some cases, a rapid strep test may be done first, which provides results in minutes but is less comprehensive than a full culture.
What do the results mean?
A negative result means no disease-causing bacteria were found in your throat sample. This suggests your infection may be caused by a virus, and antibiotics are not needed. A positive result identifies the specific bacteria causing your infection. The most common bacterial cause is Streptococcus pyogenes (strep throat). If bacteria are identified, your doctor will prescribe appropriate antibiotics. It is important to complete the full course of antibiotics as prescribed, even if you start feeling better, to ensure the infection is fully cleared and prevent complications.
Reference range
No pathogenic bacteria isolated. Report identifies second organism recovered from aerobic throat culture. Normal flora typically includes alpha-hemolytic streptococci, non-pathogenic Neisseria species, and diphtheroids.N/A
Patient should not eat, drink, gargle, use mouthwash, chew gum, or brush teeth for at least 30 minutes prior to specimen collection. Avoid antibiotic therapy prior to collection if clinically possible. Throat swab should be taken before antibiotic administration whenever possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Does a throat culture hurt?
How long does it take to get results?
Do I need to prepare for the test?
What happens if my test is positive?
Can I have a bacterial infection even if my throat culture is negative?
Sources
- 1
- 2
- 3
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.
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