Biopsy: A Comprehensive Preparation Guide for a Reassuring Experience

1. What Is a Biopsy? Why Is It Necessary?

Definition and Role of Biopsy

A biopsy is a medical procedure that involves removing a small tissue sample from the body for examination under a microscope. The tissue sample is then sent to a pathology laboratory, where specialists analyze it to identify abnormal cells or signs of disease. The primary role of a biopsy is to help accurately diagnose a disease, determine its stage—particularly in cancer—and guide the development of an effective treatment plan.

Common Types of Biopsy

There are several types of biopsy, depending on the location and type of tissue being sampled:

Needle biopsy: A thin needle is used to collect a tissue sample. This includes fine-needle aspiration biopsy and core needle biopsy.
Excisional biopsy: The entire tumor or abnormal area of tissue is removed, commonly used for small lesions or suspected skin cancer.
Shave biopsy: A blade is used to remove the outermost layer of the skin, commonly for diagnosing superficial skin lesions.
Punch biopsy: A circular instrument is used to remove a deeper skin sample, including the epidermis, dermis, and part of the subcutaneous tissue.
Endoscopic biopsy: Tissue samples are collected during endoscopic examination of organs such as the stomach, colon, or bladder.
Bone biopsy: A sample of bone marrow or bone tissue is collected to diagnose blood disorders or bone cancer.

2. What You Need to Know Before Undergoing a Biopsy

Discuss Your Medical History and Current Medications With Your Doctor

Before undergoing a biopsy, open and honest communication with your doctor is extremely important. Patients should provide complete information about their medical history and all medications they are currently taking.

Discuss anticoagulant and antiplatelet medications: This is one of the most important considerations. Medications such as aspirin, warfarin, heparin, clopidogrel, rivaroxaban, and apixaban may increase the risk of bleeding during and after the procedure. Your doctor will advise you whether the medication needs to be stopped, when it should be stopped, or whether an alternative medication is needed. Never stop these medications on your own without your doctor's instructions.
Other medications: These include medications for diabetes and hypertension, herbal medicines, vitamins, dietary supplements, and any over-the-counter medications. Some may interact with anesthetic medications or affect blood clotting.
Allergy history: Tell your doctor if you have a history of allergies to local anesthetics, antiseptic agents, adhesive dressings, or any other substances.
Medical history: Underlying conditions such as cardiovascular disease, diabetes, asthma, liver disease, or kidney disease may affect the biopsy procedure and your recovery.

Inform Your Doctor if You Are Pregnant or May Be Pregnant

If you are pregnant or suspect that you may be pregnant, inform your doctor immediately. Certain biopsy procedures or medications used during the procedure may require additional precautions during pregnancy.

Pre-Biopsy Tests

Depending on the type of biopsy and the patient's health condition, the doctor may request certain tests before the procedure, such as blood tests to assess blood cell counts and clotting function, as well as ultrasound, X-ray, CT, or MRI to accurately identify the area to be biopsied.

3. Specific Preparation Before the Day of the Biopsy

Diet and Fasting

Fasting instructions: Depending on the type of biopsy, your doctor may ask you to avoid eating or drinking for a specified period before the procedure, for example, 6–8 hours. Routine needle biopsies often do not require fasting, whereas fasting may be required when general anesthesia or sedation is used or for certain procedures, in order to reduce the risk of aspiration. Always ask your doctor about the specific instructions for your procedure.
Water and other fluids: Even when fasting is required, you may sometimes be allowed to drink a small amount of plain water several hours beforehand. Always follow the instructions provided by your healthcare team.

Management of Anticoagulant and Antiplatelet Medications

Management of anticoagulant and antiplatelet medications before a biopsy must strictly follow your doctor's instructions.

When should medications be stopped? The timing varies depending on the medication and the bleeding risk associated with the procedure. For example, aspirin may sometimes need to be stopped several days before a procedure, while warfarin may require earlier adjustment. In some cases, an alternative anticoagulation plan may be considered.
Bridging therapy: In certain circumstances, your doctor may prescribe a temporary alternative anticoagulation regimen, known as bridging therapy, during interruption of the usual anticoagulant to reduce the risk of thrombosis.
Importance of following medical instructions: Stopping or changing medication without medical guidance may increase the risk of complications, including uncontrolled bleeding or blood clots.

Personal Preparation

Appropriate clothing: Wear loose, comfortable clothing that is easy to remove and allows for convenient movement.
Bring a family member or companion: If sedation is required or you feel anxious about the procedure, consider having a family member or trusted companion accompany you to assist with transportation and care afterward.
Bring necessary documents: Bring your identification documents, health insurance card, relevant medical records, and a list of your current medications.

4. How to Reduce Anxiety and Prepare Emotionally

A biopsy may cause anxiety, but good psychological preparation can help you approach the procedure more calmly.

Learn About the Procedure and Ask Questions

Understanding the procedure can help reduce fear of the unknown. Do not hesitate to ask your doctor or healthcare professional about:

The purpose of the biopsy.
The specific steps involved.
Sensations you may experience during and after the procedure.
Potential risks and complications.
How long it may take to receive the results.

Relaxation Techniques

Deep breathing: Practice deep-breathing exercises to help calm the nervous system.
Meditation or listening to relaxing music: Listening to your favorite music, meditating, or focusing on a relaxing activity may help distract you from anxiety.

Support From Family and Healthcare Professionals

Share your feelings with family members or friends. Encouragement and support from people around you can help you feel more reassured. Do not hesitate to express your concerns to healthcare professionals; they can provide additional information and emotional support.

Benefits of Psychological Preparation

Maintaining a calm and prepared mindset can help you cope with the biopsy and may contribute positively to your recovery afterward.

5. Biopsy Procedure at University Medical Center Ho Chi Minh City (UMC)

At University Medical Center Ho Chi Minh City (UMC), biopsy procedures are performed in a professional manner with a focus on patient safety and diagnostic effectiveness.

Reception and Administrative Procedures

Upon arrival at the hospital, patients will be guided to the reception area to complete the necessary administrative procedures and verify their personal information and medical records.

Preparation in the Procedure Room

Before the biopsy, the patient will be taken to the procedure room. Healthcare professionals will:

Recheck the patient's information, confirm their identity, and verify the planned procedure.
Disinfect the skin at the biopsy site to maintain aseptic conditions.
Administer a local anesthetic at the biopsy site to minimize pain during the procedure. In certain special cases, general anesthesia may be required.

Performing the Biopsy

The doctor will collect the tissue sample using the biopsy technique indicated for the patient's condition. The procedure is generally completed within a relatively short period. During the biopsy, patients may feel pressure or mild discomfort but should not experience sharp pain because of the local anesthetic.

Post-Biopsy Care

After the tissue sample has been collected, the biopsy site will be carefully dressed to control bleeding and protect against infection. Patients may be asked to rest for a short period for monitoring before being discharged.

6. What to Do After a Biopsy

Wound Care at Home

Keep the wound clean and dry: Follow your doctor's instructions regarding wound cleaning and dressing changes.
Avoid strenuous activities: Avoid strenuous activities, heavy lifting, or high-intensity exercise during the first few days to allow the wound to heal properly.
Monitor the biopsy site: Check the wound daily for any unusual signs or changes.

Recognizing Signs That Require Immediate Medical Attention

Contact your doctor or seek medical attention promptly if you experience any of the following signs:

Heavy bleeding from the biopsy site.
Increasing swelling, pain, or redness around the wound.
Fever.
Pus or other abnormal discharge from the wound.
A wound that does not heal or shows signs of infection.

Follow-Up Appointments and Receiving Results

Your doctor will inform you about the follow-up schedule for checking the biopsy site and receiving the biopsy results. The time required to obtain results may vary depending on the type of biopsy and the complexity of the tissue sample. Needle biopsy results may take several days to a week or longer.

7. Frequently Asked Questions (FAQ)

Is a biopsy painful? In general, patients do not experience significant pain during a biopsy because the doctor administers a local anesthetic at the biopsy site. Once the anesthetic wears off, patients may experience mild discomfort or pain, which usually improves quickly.
Is a biopsy dangerous? A biopsy is generally a safe medical procedure. However, like any medical procedure, it carries certain risks, such as bleeding, bruising, infection, or, in rare cases, injury to nearby structures. The doctor will explain the specific risks associated with the type of biopsy and the patient's health condition.
How long do I need to wait for the biopsy results? The waiting time may vary, typically ranging from several days to two weeks, depending on the type of tissue sample, the analytical methods used, and laboratory workload. Your doctor will provide an estimated timeframe.
Can I eat and drink normally immediately after a biopsy? In most routine biopsy procedures, patients can resume eating and drinking after the procedure unless otherwise instructed by their doctor, such as after certain gastrointestinal procedures. Ask your doctor or healthcare professional for specific instructions.
Will a biopsy leave a scar? Most types of biopsy may leave a small scar. The size and visibility of the scar depend on the type of biopsy, the biopsy site, and individual healing characteristics. Needle biopsies generally leave very small scars, whereas an excisional biopsy may leave a somewhat larger scar.
What happens if the biopsy results show cancer? If the biopsy results show cancer cells, your doctor will explain the type of cancer, its stage, and appropriate treatment options in detail. You will receive counseling and support to make informed decisions about your care.
Do I need to stop all medications before a biopsy? No. Patients should not stop all medications on their own. Medications should only be discontinued or adjusted according to specific medical instructions, particularly anticoagulant and antiplatelet medications. Provide your doctor with a complete list of all medications you are taking so that they can provide appropriate guidance.

8. References

[1] Mayo Clinic. Needle Biopsy. https://www.mayoclinic.org/tests-procedures/needle-biopsy/about/pac-20394749. Accessed: December 13, 2025.
[2] Ramsey ML, Conrad E, Chen RL, et al. (2025). Skin Biopsy. StatPearls - NCBI Bookshelf.
https://www.ncbi.nlm.nih.gov/books/NBK470457/. Accessed: December 13, 2025.
[3] Beard CJ, Ponnarasu S, Sequeira Campos MB, et al. (2025). Excisional Biopsy. StatPearls - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK534835/. Accessed: December 13, 2025.

The information provided above is for reference purposes only and does not constitute a recommendation. Please consult a physician for detailed medical advice.