Localization of a Specific Lesion Using Magnetic Resonance-Guided Biopsy (or targeted MRI-guided tissue sampling for lesion characterization)
This test involves using MRI imaging to guide a small biopsy procedure to help identify and characterize a suspected abnormal area in your body, often for further diagnostic evaluation.
["Determines whether a lesion (abnormal growth) needs further investigation or treatment by providing precise tissue samples for analysis."]
Key facts at a glance
- LOINC
- 107386-5
- Short code
- MR Guided Brst-R localize lesion
- Synonyms
- MR Guided Brst-R localize lesion
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- mr
- 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 Is This Test Used For?
MRI-guided biopsy is typically used when a doctor suspects a lesion—such as a tumor, cyst, or other abnormal growth—in organs like the liver, breast, prostate, or brain. It helps pinpoint the exact location and nature of the lesion for accurate diagnosis, often before surgery or other invasive procedures.
How Is the Procedure Performed?
You’ll lie on an MRI machine while a radiologist uses real-time imaging to guide a thin needle to the lesion. A small sample of tissue is collected for lab analysis, usually under local anesthesia to minimize discomfort.
What Does the Test Involve?
The procedure combines MRI imaging with a biopsy needle to extract tissue samples from the lesion. These samples are sent to a lab for microscopic examination to identify cellular characteristics, which may indicate benign, malignant, or inflammatory processes.
Preparation and Risks
No special preparation is needed, but you may be asked to fast for a short time before the procedure. Common risks include minor bleeding, infection, or allergic reactions to anesthesia. Rarely, there may be damage to surrounding tissues.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
MRI-Guided Biopsy for Lesion Localization
Frequently asked questions
This test is critical for diagnosing unknown lesions that cannot be identified through imaging alone. It helps determine whether a lesion requires biopsy, surgery, or other treatments by providing definitive tissue analysis for pathologists.
How long does the biopsy procedure take?
What are the typical follow-up steps after 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