Listeria Monocytogenes Bacterial Load Test
Short Name: Listeria Monocytogenes Bacterial Load
Also known as: Listeria Monocytogenes PCR, Listeria Bacterial Load Test, Listeria Monocytogenes Quantitative PCR
Listeria Monocytogenes Bacterial Load Test test available at DNA Labs India for ₹7,650. Uses Real Time PCR on Synovial Fluid, CSF, serum, mail, Animal meat, Amniotic Fluid, Faecal Blood, rectal swab samples. Results in Reports are available on the 3rd working day. Email reports within 36 hours, phone reports within 24 hours.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Kothari Ramesh Shantilal
Consultant Microbiologist · Reg: 27670
Last reviewed: September 7, 2026
Overview
The purpose of the Listeria Monocytogenes Bacterial Load Test is to detect and quantify Listeria monocytogenes in clinical specimens to confirm listeriosis, assess the severity of infection, and monitor response to treatment. It is also used in food safety testing to ensure products are free from contamination, thereby preventing outbreaks.
- Test Code
- 6175
- CPT Code
- 87798
- ICD Code
- A32.9
- Price
- ₹7,650
- Sample Type
- Synovial Fluid, CSF, serum, mail, Animal meat, Amniotic Fluid, Faecal Blood, rectal swab
- Result Time
- Reports are available on the 3rd working day. Email reports within 36 hours, phone reports within 24 hours.
- Fasting Required
- No
- Method
- Real Time PCR
Sample Collection
No special preparation is required. However, patients must sign a consent document and provide relevant clinical history.
Method: Healthcare professional
Laboratory Analysis
Sample collection is performed by a trained healthcare professional using sterile techniques. The type of sample depends on the clinical presentation (e.g., CSF for meningitis, blood for sepsis, amniotic fluid for pregnancy-related infection).
Report Delivery
Samples are immediately transported to the laboratory. Results are typically available within 3 working days. Patients should follow up with their physician for interpretation and further management.
Timeline: Reports are available on the 3rd working day. Email reports within 36 hours, phone reports within 24 hours.
Patient Instructions
About This Test
Who Should Get This Test
The purpose of the Listeria Monocytogenes Bacterial Load Test is to detect and quantify Listeria monocytogenes in clinical specimens to confirm listeriosis, assess the severity of infection, and monitor response to treatment. It is also used in food safety testing to ensure products are free from contamination, thereby preventing outbreaks.
How to Prepare
- Ensure sterile collection containers are used
- Label the sample with patient identification and collection date/time
- Transport samples to the laboratory immediately or as per instructions
- For food samples, follow specific guidelines for collection and packaging
Doctor's Notes
Reviewed by Dr Kothari Ramesh Shantilal — MBBS, MD (Microbiology) · Reg. No. 27670
"Listeria monocytogenes infection can be severe, especially in pregnant women, neonates, elderly, and immunocompromised individuals. Early detection through quantitative PCR helps guide timely antimicrobial therapy and prevent complications."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Insufficient sample volume
- Improper labeling
- Sample received in inappropriate container
- Sample with prolonged transport time without proper storage
Understanding Your Results
Not Detected
No Listeria monocytogenes DNA detected. Listeriosis is unlikely, but clinical correlation is advised.
Detected (low load)
Presence of Listeria monocytogenes. Low bacterial load may indicate early infection or colonization. Clinical correlation required.
Detected (high load)
High bacterial load suggests active infection. Immediate medical intervention is necessary.
Consult a physician immediately if you experience symptoms such as high fever, severe headache, neck stiffness, confusion, or if you are pregnant and have fever or flu-like symptoms. Early diagnosis and treatment are critical.
Limitations
- ⚠A negative result does not completely rule out listeriosis, especially if samples are collected after antibiotic initiation
- ⚠Quantification may not differentiate between active infection and colonization in some specimen types
- ⚠Test should be interpreted in conjunction with clinical findings and other laboratory tests
Risks & Considerations
- ●Minimal risk of bleeding or infection at the collection site
- ●Discomfort during blood draw or lumbar puncture (if CSF is collected)
Interfering Factors
- ●Improper sample collection or handling may lead to false negatives
- ●Recent antibiotic therapy may reduce bacterial load, causing false negatives
- ●Contamination during collection may cause false positives
- ●Inhibitors in the sample (e.g., heme, PCR inhibitors) may affect amplification
Compare With Similar Tests
| Test | Listeria Monocytogenes Bacterial Load Test | Listeria Culture | Serology |
|---|---|---|---|
| Comparison | Listeria Monocytogenes Bacterial Load Test | Culture is the gold standard but takes longer (5-7 days). PCR is faster and more sensitive. | Serology detects antibodies but is less reliable for acute infection. |
Frequently Asked Questions
What is the Listeria Monocytogenes Bacterial Load Test?
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