Microbiological screening of specimens for bacterial or fungal presence (qualitative culture)
This test checks for the presence of bacteria or fungi in your sample, helping identify infections that may require treatment.
["A simple check for possible infections in your body fluids or tissues."]
Key facts at a glance
- LOINC
- 673-4
- Short code
- O+P Spec Micro
- Synonyms
- O+P Spec Micro
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- microscopy-light
- 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 involves growing and examining a small sample from your body (such as blood, urine, or other fluids) to detect any microorganisms like bacteria or fungi. If microorganisms are present, they will grow into visible colonies that can be identified under a microscope or through further testing.
How the Sample Is Collected
Your healthcare provider will take a sample from you, depending on where you might have an infection. Common samples include blood, urine, or swabs from wounds or other body areas. The sample is then sent to a lab where it is cultured to check for growth of bacteria or fungi.
When You Might Need This Test
You may need this test if you have symptoms like fever, redness, swelling, or pain that could indicate an infection. It’s also used before surgeries, during chemotherapy, or if you have a weakened immune system to prevent infections.
What to Expect Before the Test
There are usually no special preparations needed. However, if your sample is urine, you may need to follow specific instructions, such as cleaning your genital area before urinating. If you’re taking antibiotics, let your doctor know, as this can affect the results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Microbiology Screen (Qualitative)
Frequently asked questions
How long does it take to get the results?
What does a positive result mean?
Can I take antibiotics before getting this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 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