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Staphylococcus aureus foodborne illness quantitative culture (with antimicrobial susceptibility testing)

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

This test checks for the presence of *Staphylococcus aureus* bacteria in food samples you may have consumed, helping identify potential sources of infection.

Quick summary

["A positive result may indicate exposure to bacteria linked to food poisoning symptoms."]

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

Key facts at a glance

LOINC
86319-1
Short code
S aureus Food Ql Cult
Synonyms
S aureus Food 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
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

The test detects *Staphylococcus aureus* bacteria in food specimens (e.g., prepared meals, snacks, or raw ingredients). It also evaluates whether the bacteria produce toxins or are resistant to common antibiotics, which can affect treatment options.

Why It’s Ordered

Your healthcare provider may recommend this test if you’ve experienced symptoms like nausea, vomiting, diarrhea, or fever shortly after eating, especially if others in your household have similar symptoms.

Sample Collection and Preparation

A food sample (e.g., leftovers, prepared dish, or raw ingredient) is collected and sent to the lab. The lab uses specialized culture media to grow the bacteria, which may take 24–72 hours.

Test Results Interpretation

A positive result confirms *Staphylococcus aureus* presence, but further testing (e.g., toxin detection or antibiotic sensitivity) may be needed to guide treatment. Results are typically reported as ‘positive’ or ‘negative’ for bacterial growth.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

S. aureus food culture

Frequently asked questions

This test helps diagnose foodborne illnesses caused by *Staphylococcus aureus*, which can lead to severe vomiting, diarrhea, or dehydration. Early identification supports prompt treatment and reduces risk to others.
A positive result means the bacteria may have contaminated your food, but symptoms alone don’t confirm the cause. Antibiotics are rarely needed unless severe infection occurs.
How long will results take?
Results typically arrive within 2–3 days, but delays may occur if additional testing (e.g., toxin detection) is required. Follow-up with your provider for guidance.
Can I eat the food sample if the test is positive?
No, avoid consuming any food linked to this test. Discard the sample and consult your doctor about safety precautions for others who may have eaten it.
  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