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Fine Needle Aspiration (FNA) Clinic

The Fine Needle Aspiration (FNA) clinic is located at

Unionville Diagnostic Imaging

10 Unionville Gate, Unit 204, Markham



1. Please arrive 5 minutes prior to your procedure


2. Bring your valid Ontario Health Insurance Card for registration

3. Remember to wear a face mask


If you cannot keep your appointment or need to reschedule, please give us at least 2 business days' notice.  Otherwise, a $180 missed appointment fee will apply.

It is the patient's responsibility to bring a translator if you cannot communicate in English or Cantonese.

Before Procedure

You do not need to physically prepare (e.g. fasting) for this procedure.  However, you may require to stop your Aspirin or other blood thinners such as Warfarin, Pradaxa, and Plavix, 5-7 days before the procedure. 

During Procedure

Once in the examination room, Dr. Lui will explain to you about the procedure in detail.  

  • Your skin over the area of the procedure will be cleaned with antiseptic solution. It will then be covered with a sterile drape or towels.

  • Ultrasound may be used during the procedure. This will help locate the right area for fine needle aspiration.

  • A thin needle attached to a syringe will be inserted through the skin into the abnormal area.

  • A vacuum inside the syringe causes body fluid or tissue to be suctioned (aspirated) into the needle and syringe.

  • The procedure is about 5 to 10 minutes.

  • The biopsy sample will be sent to lab for further testing.

After Procedure

No special precautions or restrictions are required following a fine needle aspiration biopsy.  You may resume your  normal activities. 

Risks & Complications

Serious complications or infection at the biopsy site are rare. Minor bleeding under the skin at the biopsy site can occur. Should you develop any problems or have any concerns, please call our clinic at (289) 800-7128.  If you develop severe symptoms, such as breathing difficulty following a thyroid biopsy, and you are unable to contact the clinic, please go immediately to the nearest Emergency Department.

Test Results

The result of your procedure will be forwarded to the referring physician usually within 3 weeks' time.  You may contact your physician to discuss the result after 3 weeks.

Please note: If your ordering physician is Dr. Lui, our office will contact you to arrange a follow up appointment.

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